Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad3982b7cc099ce…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 07:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73766f92e725483191a5249b31d01212 SHA-1: 28077069d039f99f1c06e4bb6c7b04d57dededbb SHA-256: 4ad3982b7cc099ce937bb0d90a0cd9b8bc96fe28c5fd73838def1704e97c684a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=biology+grade+12+textbook+pdf'. This indicates a phishing or scam attempt, using the guise of educational content to trick users into clicking the malicious link. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=biology+grade+12+textbook+pdf In PDF document text
    • http://files.nostalgeekretrogames.ca/uploads/1/3/2/6/132683111/rosix.pdfIn PDF document text
    • http://buniz.missiedphotography.com/uploads/1/3/1/4/131408100/nuronepatonexixivub.pdfIn PDF document text
    • http://files.alexjbass.com/uploads/1/3/1/4/131408204/pulej-bigavavubonunor.pdfIn PDF document text
    • http://files.esydave.com/uploads/1/3/2/6/132683330/sifilefibe.pdfIn PDF document text
    • http://files.thinkbigpa.org/uploads/1/3/1/4/131408439/8a9decca74447.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/1/0431/2724/2914/files/junatekinegasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/lolidodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/2060067672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/83084099524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/98376734599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/8876166894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/84432999375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/greater_noida_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/xasujatidudaxorum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/wopotomibajinosovesave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2341/files/palinowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/lusapududij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 5636 bytes
SHA-256: 59a16f3d5ca1c73e521a2cbcd2897bfa90d5c80d79802498481a58416282b4ec
font_01_sfnt_off00007753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7753 2128 bytes
SHA-256: a512649b61474db9c720612398bf70d321032141f5ad11915554bf5b5ff3fd7c
font_02_sfnt_off00008089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8089 10552 bytes
SHA-256: ee7e5b20acd6a8cae8ef1062b52378af1e6348c5afc2187e5118d075a106661b