Malicious PDF — malware analysis report

Static analysis result for SHA-256 805a8e415ba62d9e…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 13:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfc399295500b8d7b2224ccd799dee13 SHA-1: ddd40f5cf718d45a8cfe6e9d5ed6b56770e33da5 SHA-256: 805a8e415ba62d9e958440b2c78402305d668b00b8ba16637ffe7f6da7011d5d
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document's content and structure strongly indicate a phishing or scam attempt designed to drive traffic to malicious sites.

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/wb?keyword=mindful%20eating%20script%20pdf
    • http://files.appalachianaxeworks.com/uploads/1/3/0/7/130739510/tazufoxe-wodigidowefer-wegufag-fovisikosolusur.pdf
    • http://files.spiralofaccountability.com/uploads/1/3/1/8/131871433/janedisajitazoz.pdf
    • http://files.christophercawley.us/uploads/1/3/1/3/131378990/zaxagonu_moredaneneb_gimomadetewogu_gijidereg.pdf
    • http://files.maxtallentconstruction.com/uploads/1/3/1/0/131070160/jabasibirapofij.pdf
    • http://files.wataworx.com/uploads/1/3/0/9/130969633/bemosanebukilamegok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/noviwuvado.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/tawabakoneboki.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/93140226276.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/xurojebufuxemamekapakozep.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/53105272168.pdf
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/naruto_shippuden_episode_86_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0431/4306/9845/files/72989441379.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29876283886.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/wikofivurozisuv.pdf
    • https://cdn.shopify.com/s/files/1/0454/8378/6392/files/thailand_train_map.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_off00005c2a.bin
5072c69a79096976e61ee8e6d91222729994328149efcfdd6ca93ee8201d1040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A 5328 bytes
font_01_sfnt_off00006e59.bin
891eb781cf46b902270d8927094c832ca82de5505a3358e7a78bdddcd8859cd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E59 9792 bytes

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