Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1afcab25bbee83…

MALICIOUS

PDF

44.4 KB Created: 2020-08-19 18:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fd74e929a2709a55a4f5e5a918a8c75 SHA-1: 136ceeb645dfcc73fdbf4051447fda6b70dd1584 SHA-256: ec1afcab25bbee830e58fd008d9c2864249aa3a780e1e27289a32e057842842b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=barium+enema+radiology+pdf'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external PDF links, with 'https://cdn.shopify.com/s/files/1/0432/6916/1110/files/17724176773.pdf' being a prominent example. The document also contains a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running malicious code. The combination of these factors strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://ttraff.cc/pify?keyword=barium+enema+radiology+pdf In PDF document text
    • http://files.claudiascritters.com/uploads/1/3/0/8/130873795/3367270.pdfIn PDF document text
    • http://kozuzuno.bzdickstudio.com/uploads/1/3/1/3/131379730/kabub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/17724176773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/91060691094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/79561610765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/novileg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1001/5910/files/bekhayali_mein_bhi_tera_kala_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1523/3948/files/whistleblower_complaint_copy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/61994712455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/aflac_short_term_disability_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/13745554369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/moxitil.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://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7164 5332 bytes
SHA-256: e19ac8e0589a2619861407d3f813de9876028ececf882e7c130caee59415793f
font_01_sfnt_off0000837c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 9756 bytes
SHA-256: a6172a4b1605686faef2aa2bc296e55d6b76c078cf233951cbf4d8dc4d7c98ef

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