Malicious PDF — malware analysis report

Static analysis result for SHA-256 68696af90172c344…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 14:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cb156213ed1283dbf51f957685bf36b SHA-1: 250a82c739b6c3b83390e1e9c47fbde00aabf7b4 SHA-256: 68696af90172c344bc1a6c5a7ec84b775999203a86ef128bc66432c4c4682153
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a general advance-fee scam lure. The document body contains obfuscated text and a URL that appears to be part of a phishing or malware distribution scheme. The presence of numerous embedded links, many pointing to benign Shopify URLs, suggests a link farm designed to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=abbyy+flexicapture+11+free
    • http://gomobaxa.enactusguelph.ca/uploads/1/3/2/7/132710780/zujaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/99058862277.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/52337827138.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/songs_of_a_dead_dreamer.pdf
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/32677222663.pdf
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/37363636143.pdf
    • https://cdn.shopify.com/s/files/1/0435/7000/4126/files/86485702742.pdf
    • https://cdn.shopify.com/s/files/1/0454/4040/1566/files/10731803518.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/zirojoduwomivavedumetivug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/6765556976.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/96332822755.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/wipunarajevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/le_courant_bhavioriste.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ef.bin
66da13053ad62b27ef8fd8be18d1963ff6425b77d9107360a783e470e7fc1e7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EF 5184 bytes
font_01_sfnt_off000075b2.bin
67476144bc128da0d8fa223bdddd4a905aced30998124d775f3b3cc7c4d6488c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B2 10428 bytes

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