Malicious PDF — malware analysis report

Static analysis result for SHA-256 109eb05137365c0e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 01:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11ada333b265021502ed00654bebb905 SHA-1: ca6f0387a4c22c8d749470ef4df9bf69d3a46698 SHA-256: 109eb05137365c0e557582d4bbbb8faffa9a040d1e43f11d8e959b3465bf96b0
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=dry+matter+determination+pdf`. Additionally, it exhibits characteristics of a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The presence of a 'download button' lure further supports a phishing or redirection-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=dry+matter+determination+pdf
    • http://ribozevib.gronsetgard.com/uploads/1/3/2/3/132303382/zixivex-luseruvowusu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/26233968551.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/68587145551.pdf
    • https://cdn.shopify.com/s/files/1/0430/2694/0067/files/dnd_3._5_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zozaweguxilamefawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/xejexudazezerikowobewupaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0413/2508/files/dasixa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/98903641533.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/fojuwebuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/pisefikisogedubaxaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/funutulivukasos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0881/8333/files/lemuvagerat.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_off000065af.bin
26c9d16ce39796ee1b439b75e968409bccf339f3b4624fbb090269a6a6e809fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AF 5076 bytes
font_01_sfnt_off000076e8.bin
983114f8036ede87a8dd795f4900c69af7df4049f1e7dcd09f818afbc300d756
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E8 10356 bytes