Malicious PDF — malware analysis report

Static analysis result for SHA-256 615d40a864de6174…

MALICIOUS

PDF

87.5 KB Created: 2021-07-14 09:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7ec68dea1121c4289207547ea71ce842 SHA-1: 38e59c7405d39658e5bb4d047e23564bee848039 SHA-256: 615d40a864de617409d042ef949e7bb1de2cc679139fd32eb8e47e454d8fc6d7
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and the identified redirector URL point towards a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=surgical+hip+dislocation PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edf8e23e011143712b2825/1626208482164/mammographic_imaging_a_practical_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edbce4811aeb4b6580433c/1626193125051/thop_tv_for_chromebook.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e8b7025aa46e30cfebaf/1625876663901/63763110951.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee4aa127fa864c7d12863b/1626229409691/67147307499.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e85f1bea8d435859008604/1625841435962/rotolexakenomiladesiwes.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e802baf4d7c53d8b14c49e/1625817787285/49562467873.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e768bb811a51280ff75f16/1625778363455/what_is_the_definition_of_spoils_system.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee27afe9cbfe6c2fe6745c/1626220463890/itouch_users_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edbbd67bdb5238db91e853/1626192854144/the_days_of_noah_part_3.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee5761c27d1e40a54c0e03/1626232673269/amphibians_other_than_frogs.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_off0000f31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31C 10836 bytes
SHA-256: 34aebe319310e448f3b278e2583429ef730a72c65d3c5b57a8ba2a4560acc2cb
font_01_sfnt_off00010bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123DE 17040 bytes
SHA-256: bf3342c563b354f26351e6f4ef76d0bd032557b566a1c8db81533d76c7356471

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