Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fc46fc2347cca4…

MALICIOUS

PDF

45.1 KB Created: 2020-08-15 05:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e505c8aed5a4bb37e1a4f73eb9a91a9 SHA-1: 4291c64174167877ef69a4d55d9ce9f2b13a3115 SHA-256: e9fc46fc2347cca4f087ec5455d4a532426e5c705fc1279d1f9f63ee098dba23
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=accounting+information+systems+14th+edition+citation`. Additionally, it exhibits characteristics of a PDF link farm, with numerous links pointing to external PDF files, many hosted on Shopify. The document body, though heavily obfuscated, also contains the malicious redirector URL and other PDF links. The presence of a callback lure heuristic suggests a potential for social engineering beyond just a link click.

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) 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.cc/pify?keyword=accounting+information+systems+14th+edition+citation In PDF document text
    • http://files.survivehc.com/uploads/1/3/0/8/130813357/duzaxamavara.pdfIn PDF document text
    • http://lereva.sweetmessyfaith.com/uploads/1/3/1/4/131407005/lulok_dimobul_fafenevikonoz_bokabokobo.pdfIn PDF document text
    • http://zuzur.be-boosted.org/uploads/1/3/0/8/130814297/kuzoxage-duvuduzadiluzor-biraxokenaxe.pdfIn PDF document text
    • http://files.barefootcustomknives.com/uploads/1/3/2/8/132814624/bixajolafo.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/1/0434/6678/4932/files/facebook_for_pc_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/68070280406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9430/2115/files/13035687962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/gimoxaxivazevivoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9998/5822/files/43020025822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/gobikoketi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/74344185916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/winubazizov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3694/1215/files/16620458210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/83359340138.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_off00006ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECB 5636 bytes
SHA-256: 94a27e631c108f8dc68af51ba288d8f7096e96f39cd9b36e6c2ac4bb69a2e6f8
font_01_sfnt_off000081d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D9 11136 bytes
SHA-256: 392ba88e37a79f9c8c63c2352e2105992a9ce512d3e3b012905a8b0c62f82881