Malicious PDF — malware analysis report

Static analysis result for SHA-256 814e69e5dfb3c113…

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 22:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04c43e2bdd03bc2fd8f2f137cc94be9a SHA-1: 5b8dcdb5fb11fef1f6ed8e3ea58152b218dee285 SHA-256: 814e69e5dfb3c1132573b28f200521f5397ebe050f877638466938ce900155cc
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=profile+page+template+free', is presented within the document body, disguised as a profile page template. This suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

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.cc/pify?keyword=profile+page+template+free
    • http://gerisup.feralcatrecoverycentre.com/uploads/1/3/1/3/131383483/lojotusijuwaji_devabe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7081/5397/files/xefenuritapanaxufavuzizu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2075/3823/files/88601050593.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/davamumogewudubajuxumaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/25502613541.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/43353103844.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/wopikivowexokuvapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/kedun.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/1237729245.pdf
    • https://cdn.shopify.com/s/files/1/0434/0881/8333/files/87931422837.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/kesixuzasigigozobadu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/carti_istorie_academia_de_politie.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/21811377767.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_off0000748b.bin
9af5483ed255073f770111b60ce4be83246b1a87bf8458341f11d4a407238050
pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 5044 bytes
font_01_sfnt_off000085a0.bin
e6b62575e6789024b6bc48fd3917e004077e60a8f5522216ab5ebcc79129d7b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 10228 bytes