Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e204b198089b2f4…

MALICIOUS

PDF

48.6 KB Created: 2020-08-03 09:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13a000fdb4fd513666a5107fa0c0c8b5 SHA-1: 4832645d351d6a0eb8fb918fc890df309eb8c2f6 SHA-256: 2e204b198089b2f48eaa71e22c464d153d7acb26ee488bc78f9666d731cc71a9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, which are part of a link farm designed to obscure the ultimate destination. The primary malicious redirector identified is https://ttraff.com/pify?keyword=remove+commit+from+github. This indicates a phishing or scam attempt, likely to lure users to malicious content or further stages of an attack.

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=remove+commit+from+github
    • http://files.blingbyfee.com/uploads/1/3/1/3/131398000/mogupukureg.pdf
    • http://files.energyhealingtogether.com/uploads/1/3/2/6/132682142/7693563.pdf
    • http://files.affinitycollective.com/uploads/1/3/1/4/131438667/5443170.pdf
    • http://files.marketplacecreationsdiy.com/uploads/1/3/0/9/130969080/nunobepiluvo-tetibofo-sabiz.pdf
    • http://files.ijumpsportsmedia.com/uploads/1/3/0/7/130740221/7999568.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/toraladomokipina.pdf
    • https://cdn.shopify.com/s/files/1/0433/2525/9944/files/fagimizibutu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/50753453659.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7124/files/60620862105.pdf
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/94791304317.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7897/files/62279299670.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/nawilabovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/30918959716.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/pudip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/tifosibutuzelo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/gosixomomujusajewarena.pdf
    • https://cdn.shopify.com/s/files/1/0440/8918/0310/files/fogurexapavawebugujip.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000670b.bin
c392a81dbfb31c1ec216d7b749271a3e276b03471e49b85ea2ea5e309307ee13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670B 4860 bytes
font_01_sfnt_off000077af.bin
de75ad3e52ef028da5dc6236ec83a306dd0dcd2df462730d39fc4440a3268a8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AF 16056 bytes
font_02_sfnt_off0000a74b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74B 4324 bytes

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