Malicious PDF — malware analysis report

Static analysis result for SHA-256 777d7ed722bc0024…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 07:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e567247e4acf4b86062816d3917398 SHA-1: 45eba2e422427f8ede1beff841acb0fc709376d8 SHA-256: 777d7ed722bc00247269b41468cc8d8fd27520ab9a8387a3100b98d0173cdd0f
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, ttraffic.com, which is likely used to funnel victims to further malicious content. The document body also contains numerous links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to increase visibility of malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious redirection attempt.

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=brucellosis+in+dairy+cattle+pdf
    • http://files.neverwantednothingmore.com/uploads/1/3/2/7/132741535/b50d01ba2e5ccfc.pdf
    • http://files.sophiceramics.com/uploads/1/3/1/4/131407952/totopeji-gejuxaluxaroxut.pdf
    • http://files.stephanie-hixon.com/uploads/1/3/1/6/131606331/3792846.pdf
    • http://kunox.richlandcountydemocrats.com/uploads/1/3/2/6/132682787/puduz-verupifonese-newutafif.pdf
    • http://files.goddessashley.com/uploads/1/3/2/6/132682655/fefapupizibaro_ralimovazabid_kabaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0461/0532/9828/files/vidmate_apk_install_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0450/3198/1220/files/voganobipozubir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/7687754802.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/1072364548.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/59066409238.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/aptoide_apk_descargar_gta_san_andreas.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/juxupozotujuxuxazuve.pdf
    • https://cdn.shopify.com/s/files/1/0448/5441/1425/files/verbal_reasoning_practice_tests_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/mutagidoxu.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_off0000774f.bin
2a059931ca14d916394f8f99dd283d39cbad81dec33cf70e7c3da62814fc36ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774F 5300 bytes
font_01_sfnt_off0000896a.bin
fa80ac1d18bfbde893d9e8e4bdeaa021647cef614684cb500515a87a6b14e2f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896A 9964 bytes

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