Malicious PDF — malware analysis report

Static analysis result for SHA-256 12040cb43fc8049d…

MALICIOUS

PDF

35.6 KB Created: 2020-09-20 11:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9ff2eb71f4f9e1adad92d1269fda43f SHA-1: a228a3976b2b79f641db764f89eef0261d69b635 SHA-256: 12040cb43fc8049da559abb43ef1170f0e11853c1b0db8c9c95c2a02c9bc283c
224 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a malicious SEO link farm, containing numerous links to other PDF files hosted on disposable domains. The primary link, 'https://ttraff.club/wix?keyword=download+apk+fb+lite+versi+lama', suggests a lure to download an application, likely malware. The ML classifier strongly indicates maliciousness, supporting the conclusion that this document is part of a campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=download+apk+fb+lite+versi+lama In PDF document text
    • http://files.beanieforpeace.com/uploads/1/3/1/8/131857117/ab31d4bef.pdfIn PDF document text
    • http://wetonofiz.drdebkennedy.com/uploads/1/3/1/3/131380625/wajepazow.pdfIn PDF document text
    • http://files.gaeltachtcommunications.com/uploads/1/3/1/3/131379999/wiselimugafupopatewe.pdfIn PDF document text
    • http://vimemuta.cyndikuhn.info/uploads/1/3/0/8/130814088/fagavofokitoz_tepamerutelip.pdfIn PDF document text
    • http://vitedim.abundantlivingpsychologicalandcoachingservices.com/uploads/1/3/1/3/131381761/7369036.pdfIn PDF document text
    • http://lemaw.amygibbstherapies.com/uploads/1/3/2/6/132695584/bc5813cdc.pdfIn PDF document text
    • http://xobawag.glessranchcurbside.com/uploads/1/3/1/6/131636725/4f46fbe24.pdfIn PDF document text
    • http://files.njall.org/uploads/1/3/1/8/131856306/mider.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b8bb2de2-13f2-4688-8aee-1ddf2779aee4.filesusr.com/ugd/e66789_d06a0996beb64738a50b235196615780.pdf?index=trueIn PDF document text
    • https://1c5d7568-d69f-45af-84e4-00e545299088.filesusr.com/ugd/5f4192_c83987edf325453e82ab3b30aff2a0a8.pdf?index=trueIn PDF document text
    • https://450c1156-c80b-4207-aead-b70fb265e21d.filesusr.com/ugd/e33828_de0565915fcc4f81a4a7e72f921eb4a9.pdf?index=trueIn PDF document text
    • https://49de2d4e-7437-409e-95b1-d6282c1e81ce.filesusr.com/ugd/ed8107_cf125615c38547d2be6d8a0daf2b742c.pdf?index=trueIn PDF document text
    • https://c4a67d7e-13ef-4642-952e-fbe20ce452c2.filesusr.com/ugd/54dfea_ddc1cdbb71df4793a8e256f339588e98.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3955/4727/files/jefedefaxadeleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/pathfinder_ultimate_race_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3A 5544 bytes
SHA-256: 98166fd23494b714dfabd968dadd8f9a3f119bd7184652002af7ff5ab5676456
font_01_sfnt_off00006219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 9260 bytes
SHA-256: 97ad330701ca60c33e37cc23fedddcddfc130aaf3514918a37ad6bca7fbd4b35