Malicious PDF — malware analysis report

Static analysis result for SHA-256 74966cb5701870c4…

MALICIOUS

PDF

67.3 KB Created: 2020-08-04 01:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8018b7afada05b2a9774df099bd35a9 SHA-1: 6535f7b3c9f7f13ca497fc9621286233ba19ebf3 SHA-256: 74966cb5701870c4be19190e329ff930aa903ec9b83aa98eb4b0086839edd18f
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a malicious URL, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.com/pify?keyword=causes+of+inflation+in+economics+pdf' is a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=causes+of+inflation+in+economics+pdf
    • http://files.thebackwardslife.com/uploads/1/3/1/3/131379832/3539371.pdf
    • http://files.americandancecenters.com/uploads/1/3/2/7/132740352/dab5eebb295c.pdf
    • http://files.michaleens.com/uploads/1/3/1/4/131408369/javosorawanubedox.pdf
    • http://files.sfihs-sfusd.com/uploads/1/3/2/7/132711947/ximugabutasebuvari.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/53611516681.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/mubikozibupanagozun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/35629673589.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/lokuzozomavabod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/zusav.pdf
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/fiwutedapajotozokurev.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8932/files/honda_eu2000i_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/zixulokuliv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/14715695084.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/15367526412.pdf
    • https://cdn.shopify.com/s/files/1/0434/4132/4184/files/rujijopimisifenofebiji.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_off0000baec.bin
747c02bbda1ff7d3ec81de67bcca62cca066bd8371d1065490083c39a104e1a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEC 5108 bytes
font_01_sfnt_off0000cc3e.bin
85bae9e4f3b0e7525db1096f1c2fc8b37f783f6b07f4211cf151f63de86d5530		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3E 16428 bytes

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