Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f0894f07eedcce…

MALICIOUS

PDF

52.6 KB Created: 2020-08-14 14:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa4ae5c3ff665eeedb098410b288c347 SHA-1: e55f2834dd7372d46740f0d185b4e72574542c0e SHA-256: 33f0894f07eedcce7022353b6dc2ee9f4836eccb2c3004934f6e036afab5268c
182 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, suggesting an attempt to drive traffic to malicious content. The document body, though heavily obfuscated, contains the URL "https://ttraff.com/pify?keyword=accident+reporting+centre+ontario", which is flagged as a malicious redirector. The presence of numerous PDF links, many pointing to Shopify, indicates a potential SEO poisoning or link farm tactic to distribute malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or scam lure.

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=accident+reporting+centre+ontario
    • http://rimeko.clearlakestatepark.org/uploads/1/3/1/8/131856772/movizaxulajibid.pdf
    • http://files.andybutfoy.com/uploads/1/3/0/7/130775025/09d242782e19.pdf
    • http://files.coonangusranch.com/uploads/1/3/2/8/132815916/zugax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/23266968503.pdf
    • https://cdn.shopify.com/s/files/1/0438/0160/8353/files/89741454152.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/50200702340.pdf
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/eulerian_numbers_petersen.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/61490013766.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/93252956087.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/buvifibumigodinupisik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/arduino_oscilloscope_projects.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/80305071197.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/18572541264.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/ladowavugax.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/impact_of_globalization_essay.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/falasevuvupu.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_off00009039.bin
5ef1e57c2f68fa53048bd71e7f11420923a7830c4e55c071a286a2973adf72b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9039 5020 bytes
font_01_sfnt_off0000a14c.bin
081320c7b0bffb402787aa64f96f7426fd0a7cce7af0702618d32b0e411a5eab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA14C 10536 bytes

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