Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e97de6445c563f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-12 13:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f973efd06ca7c8d02fc5507061c250 SHA-1: b837c4c0e916bafb354da21b036092fe4fb15b2a SHA-256: 07e97de6445c563fd72c23dc08dcf6d1ee6014097429c66e21a6031a8fce496b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of external links, many of which point to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a redirector link to 'ttraff.com', a known malicious domain. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the 'ttraff.com' URL, reinforcing the malicious intent.

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=volcano%20worksheet%20tes
    • http://files.dreamwriterink4u.com/uploads/1/3/1/4/131483002/bogetifopumejuf.pdf
    • http://padabisu.independentauthornetwork.com/uploads/1/3/0/9/130969559/zerinutejosarulexeda.pdf
    • http://sofomega.musictypographer.com/uploads/1/3/1/6/131607163/sunak.pdf
    • http://files.randomfrequents.com/uploads/1/3/2/7/132710763/mefojexe.pdf
    • http://files.darlingterracepublishing.com/uploads/1/3/1/4/131453395/fizatitebixowiwenini.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/plague_inc_hacked.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/les_anticoagulants_oraux_directs.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/how_many_gb_is_ark_survival_evolved.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/windansea_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/texoti.pdf
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/gexawubumibutefozasesut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/bourdon_pressure_gauge.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/juvipon.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/prodigy_damage_hack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/1492916389.pdf
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/wopagosaxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.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_off00004840.bin
210334aa6f42bde895d61024a9bb4f66d3ac9108ae6964fb323e6f918a36e551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4840 5008 bytes
font_01_sfnt_off00005954.bin
872d8e19105128c43a8a5c8e999daf8c2278968770b941ab655a0294e764f7b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5954 9424 bytes

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