Malicious PDF — malware analysis report

Static analysis result for SHA-256 710e603920ec770c…

MALICIOUS

PDF

50.2 KB Created: 2020-07-30 23:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d0f30f0a75632342772a896e230c99f SHA-1: 686e5c9cb67b70de1b9f3c1041052873e686a979 SHA-256: 710e603920ec770ce50db191d8b835a0bb84d9497ff7b69912efb223c34df0e3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to inflate SEO. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to a "joint venture agreement".

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=joint+venture+agreement+uk+pdf
    • http://files.wardill-lab.com/uploads/1/3/1/6/131636712/rakumow_pozul_dutenek_xorisakodawot.pdf
    • http://files.yang-enhume.com/uploads/1/3/2/3/132303270/sigirelepupival-penibokosofox-runajamixuvev-kukozeda.pdf
    • http://files.kyokushinkaratewodonga.com/uploads/1/3/1/3/131381555/talimoroxovogapubo.pdf
    • http://files.britishjeep.com/uploads/1/3/0/7/130776001/17f7e06bf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8271/8115/files/5486333475.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/93763249836.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/jugiwaralamifozosupivedat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7356/8919/files/falelimerawemutanobaxori.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/28547739501.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/64867924223.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/ruvidudinejukuxajesenigoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wijufuku.pdf
    • https://cdn.shopify.com/s/files/1/0435/0912/1184/files/razuxazapibemi.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_off0000865c.bin
53df252ed4e7804179229cb0cd857dbe4007946c7da227daa4862b966d6c77a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x865C 5148 bytes
font_01_sfnt_off000097ce.bin
6ddeea45a6d476dbaf4485be8e53c6428271b5d3f7f0a69959a828843b43da66
pdf-font-stream PDF embedded font (sfnt) at offset 0x97CE 10552 bytes