Malicious PDF — malware analysis report

Static analysis result for SHA-256 114131089b0780d7…

MALICIOUS

PDF

50.5 KB Created: 2020-08-03 07:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb5966412511aa5fe3f5e102f4b37de SHA-1: 3089bf62d5cedfea206a712ee23859bc1550235b SHA-256: 114131089b0780d75ad4b059ca208ac8900cf72cb8730c724869b67de841eb52
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful destination. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or redirection scheme.

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=catalina+island+fishing
    • http://files.thecedarwoodproject.com/uploads/1/3/1/6/131607712/pekomeferagewu.pdf
    • http://files.transparentturtlegraphics.com/uploads/1/3/2/6/132681443/zibakut.pdf
    • http://files.coopersmastiffs.com/uploads/1/3/0/8/130814078/mejogarex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/4594212961.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/65409189012.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/vananipepeboduw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/rolalepotog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/80395772970.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/ganuwifakuzizifadukitede.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/calculus_early_transcendentals_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/safekalodupewolixuloximi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97454987384.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0762/files/zepunutat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/76772171847.pdf
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/nesunijupuwube.pdf
    • https://cdn.shopify.com/s/files/1/0434/0930/9854/files/tesefafamisojajofemurox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/39919355283.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/whirlpool_cabrio_platinum_dryer_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d32.bin
819b6a39944d622c85f409c5e27aa090f3b62eef0a21f8e170950b7b6cfae96d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 4656 bytes
font_01_sfnt_off00008cf5.bin
f5c0ef5b74f816b8c4d81f90c6ab68465be2ebeeccd65914ccd557f622286d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF5 9820 bytes
font_02_sfnt_off0000ae85.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 4324 bytes

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