Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0920aa72db94e2…

MALICIOUS

PDF

86.4 KB Created: 2021-07-16 03:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e74f643487e7f9a737c0c3f2f8a82eed SHA-1: d551dfbe0601bc82b6ca6b2f2374d41f9336b4ac SHA-256: 5f0920aa72db94e2fbd076ffef70a01b6419ecdbaceebd3ffdb3fe4b62c2cede
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1071.001 Web Protocols

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress installations and potentially disposable hosting, indicating a phishing or malware distribution attempt. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f80bd81c2f02af47c022034b7a4c9a19/10175640371.pdf In PDF document text
    • https://jotelek.hu/files/file/12236585923.pdfIn PDF document text
    • http://zuestag.ch/userfiles/files/zodasodijumusaf.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609db5ac8fa88---sadugo.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa1cbe05fbe---56439697574.pdfPDF link annotation
    • http://cp-1.ru/userfiles/files/33094614148.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16088837781a22---88004575344.pdfIn PDF document text
    • https://ratsimae.eemedia/contents/file/53867641141.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/ttum82dqagq3542mic3af0spfh/41742228814.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/3885752793.pdfIn PDF document text
    • http://tcihk.com/userfiles/20392964795.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d23b36894a---45354556.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/15839623930.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/4e5c8a7bc265d28141de37d037782586/43675688819.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/n89jq60b33m7ehm4tp88hhl111/67434424211.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/db22cb3210aba4b9352a315c09531c2b/30813184611.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/661fdc4329b9f4c1161ee76a64d61aa2/fumujesa.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/zukobiloganiruwugosidob.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f14e00e233---kixesis.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/ce6747824b71c20e0c768fd4504588e7/83580208101.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160780ad5c958e---93345415722.pdfIn PDF document text
    • http://celyroknaterase.sk/editor_uploads/system/files/37239388295.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160adc7ce6a2df---48339094690.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/45049364345.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/fcdf3c1a2eec7e92adf493363f1155fe/julovuxiduwuku.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/d07e02974d03546c66c2381197c1b9ea/xewuziladewizuleful.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=scooby+doo+meets+the+boo+brothers+full+moviePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED76 10968 bytes
SHA-256: 361264d08a86ed9bda9ede8aaaa1567032d20f1ab60fdf2b0f466ba49d54a8bf
font_01_sfnt_off000106ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106ED 17188 bytes
SHA-256: b0777fbb32ea626dd8c050fa10459b7bfcc7395cdbb7df50d40c3e39c1e6a456
font_02_sfnt_off000133cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.