Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa469e7134eb8e9d…

MALICIOUS

PDF

88.9 KB Created: 2021-07-04 00:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c54051c65f84ce65351d9d1abd57ec4b SHA-1: 5e4e8fb0c4a89675eb1a284addc25e0942d3ddc2 SHA-256: aa469e7134eb8e9d3a851cfa58a70642d4e19cf4426f384e122db8a980e49c4f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external URIs and is identified as a link farm, suggesting its primary purpose is to redirect users to potentially malicious websites. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://catamma.ru/uplcv?utm_term=synopsis+of+the+girl+in+the+window PDF link annotation
    • http://ypperfect.com/ckfinder/userfiles/files/zanenibema.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/787uqpdhvb95tj5ekbhuqjo8mq/11905172211.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0a8debb0e---fepibinujanofuworib.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a7328772841---tevoju.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/36002046303.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/pojarovizemubef.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/24147cfc8d602da394682eeb8d768c51/zutim.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb380bf0ad---puranetexowasaw.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16074a4d496408---48710455854.pdfIn PDF document text
    • http://pahsclassof2005.com/clients/d/d6/d61c4c031b0f3af13d3e88110ef3a3e1/File/lidubudaxifewugafetogoz.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/22f3f92a85bfbde1f1b4fbc3b8228253/sasevojisupofuzupawa.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609860fd4c315---69915618858.pdfIn PDF document text
    • http://de-ko-gmbh.com/ckfinder/userfiles/files/8577742190.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160834bc36ecb3---68100435049.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/qif2eed02kavb4ca8q0mfaatqt/77404777926.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16075c1cc8aacc---tikomidarere.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/batupatiwufamuwuva.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/6r3g2guknu37macf6j9ospcfjq/16267252792.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/37670430793.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/zepiti.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/6a38b6b5483d7d213aa801fca4668e8a/21803523274.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/7le1b72q0hjc8rds949rh30n5f/puwudabonexelepugemi.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a52d6322251---64705508685.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/kurujulen.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/4b63o32rh2qhg70n25ou0p2g74/kijujezu.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/277f1e59ce09aedafa46655c4e2213a0/sufubajutepovemonaz.pdfIn PDF document text
    • 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_off0000f52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52C 10892 bytes
SHA-256: 5e130fc3dc3bcfbf17eb22e0d805fd5399d2811eae03d5c50a4ea59210aee003
font_01_sfnt_off00010e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E25 18248 bytes
SHA-256: e34cd6489105177aad87ce5a8218cc55d1007bdefd15b40def3b10ca675ed2cf
font_02_sfnt_off00013dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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