Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71d518419cee703…

MALICIOUS

PDF

86.3 KB Created: 2021-06-29 07:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 02798e941b4a7b5417fd8e06fa392666 SHA-1: f3fb37bd84c2788f2371e074970307cb363e59a8 SHA-256: d71d518419cee70379aa1aa6cfc301766127908b69afbbb0a1136d5272aa4040
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be compromised WordPress installations used for hosting malicious files. The presence of 'utm_term' parameters suggests a phishing or SEO manipulation tactic to lure users with fake download links. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crysiq.ru/uplcv?utm_term=the+avengers+full+movie+download PDF link annotation
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/2b14t9jbmstklp6sjla77qgpc7/vazuradolotir.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8fca80219---77097433383.pdfIn PDF document text
    • https://pioneerlift.com/upfiles/editor/files/54294952707.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/8cfd29ebfa1fb614210ffaa81092e6b5/57948453880.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f86810103a5e34f0e06f40a4e4a3d2ff/95033364256.pdfIn PDF document text
    • http://cpils.com/userfiles/file/61802717776.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c66477e528e---sesikotijilunutodo.pdfIn PDF document text
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/rawosedore.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/t1pqa25nkq0a92sb1g44bmcud4/93887144859.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090ebf08e28e---46583001384.pdfIn PDF document text
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/duniwefo.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/e8fcbd9fd85bf520c5bcb79605e11bc3/womakijotunapifisux.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab17b58a6dc---69652714539.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5c84784d1---26346536972.pdfPDF link annotation
    • https://zweefvlieg.net/userfiles/file/rirawegedelozep.pdfIn PDF document text
    • http://wami.cc/data/files/61334888195.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a520071749a---1696775322.pdfIn PDF document text
    • http://capital96.com/userfiles/file/dunapenivesulepo.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/xujix.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/qf81dg0e08cv4cn5g4tfag43p4/58072545556.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/74c09bc24a5964b7fda75b5439f3d51f/lakibatijivumulokisezud.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916f6141813---6626019223.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/sunodesupivisobe.pdfIn PDF document text
    • http://go-pxl.com/uploads/files/xoxoxopubiru.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/9fe8c71f258746fafe4a93a395894bcd/vufumoja.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_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 17816 bytes
SHA-256: 74fb4a364fa6c999e6884b2e3a6764553b2f06ce6ebcd5e771419ffc88b840a8
font_01_sfnt_off00011b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001331b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331B 10916 bytes
SHA-256: f1b3587a1f170e3811e4efaca1715f3e4cf7b39dfbb168b305d0365259d074e8

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