Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2c44980281654e…

MALICIOUS

PDF

55.3 KB Created: 2020-08-03 02:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: daf66b4c9e385301491bb58a7fa80f04 SHA-1: f6ee1294ed6d10e18f5f958dc39f0df8a9ea0e55 SHA-256: 6d2c44980281654e6425315c9da6386923f2692478423a0b6d94bbd2b834eee1
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a high ML classifier score. The document body, though heavily obfuscated, contains a URL that aligns with the observed malicious redirector. The primary attack vector appears to be a phishing lure, likely distributed as an attachment, directing users to a malicious site for potential credential harvesting or further malware delivery.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=yoga+outlet+coupon In PDF document text
    • http://files.firstspeakers.ca/uploads/1/3/0/9/130969139/6140092.pdfIn PDF document text
    • http://files.shesprettycrafty.net/uploads/1/3/2/7/132710491/faxovodonoroxufokad.pdfIn PDF document text
    • http://files.thenorthwoodsnews.com/uploads/1/3/0/8/130874043/4747433.pdfIn PDF document text
    • http://files.liic.org/uploads/1/3/0/7/130738719/tasowog.pdfIn PDF document text
    • http://files.susieandnathanmusic.com/uploads/1/3/2/7/132740377/zupobapol.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/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34007792176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3023/9637/files/vevudanorawexodiravoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/south_park_minecraft_episode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/lasasovobalafozeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golalebilafofuzugetuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7193/0519/files/88327867362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/17458800129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/96963618003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/39659251885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3186/files/4501836601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/87983271536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4314/4359/files/37068026358.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F2 4788 bytes
SHA-256: 929e64e6d93e9317eadddf9a923a2183103dd9464316bea5375fcc4f1473ab31
font_01_sfnt_off0000aa58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA58 11080 bytes
SHA-256: a51ae14ed251181d6e0eb342103357f051a8e2cb8d8b0187730553c887209b9c