Malicious PDF — malware analysis report

Static analysis result for SHA-256 deedfbfc00e88672…

MALICIOUS

PDF

51.5 KB Created: 2020-08-19 14:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad8fa3b242cb1206980312b0afc754eb SHA-1: 943cd1a2f69e213edfbf68716a8a44a53d47957f SHA-256: deedfbfc00e88672b74fbfae5006dcabbaf73118ec376e04f156ce40c6f136f3
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'expanded accounting equation template'. This, combined with the heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'SE_CALLBACK_LURE', suggests a phishing or scam attempt. The presence of numerous links to Shopify-hosted PDFs, while many are benign, indicates a potential link farm used to obscure the malicious redirector.

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=expanded+accounting+equation+template In PDF document text
    • http://gozab.stephenlotus.com/uploads/1/3/1/4/131454035/9655654de4.pdfIn PDF document text
    • http://files.rosaveritas.nl/uploads/1/3/0/7/130738675/2619277.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/1/0427/8996/1884/files/fitemenusororar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/nuwupidofawisorimemiwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/61213292072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/feline_leukemia_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/32297594515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/78544378355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/line_chart_d3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3371/3050/files/zufujozezet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/anticipatory_bail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/2693473837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/36160170870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/furuxupekapodebal.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_off00008b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2C 5268 bytes
SHA-256: d8f5b96565364aa5d1733fc59ef5bae1d8fd4e46b07892940c0a9f434539c5a7
font_01_sfnt_off00009d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D03 10648 bytes
SHA-256: 3671ae04d99e71c514187de2c72a3132ad6fd90479f78cba74ec1635e35fe98b