Malicious PDF — malware analysis report

Static analysis result for SHA-256 932e9063957fc732…

MALICIOUS

PDF

43.2 KB Created: 2020-10-28 23:23:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 75fe53cb667883337aef88c8b75e11f8 SHA-1: 12f6df85a409b4db8f56875a9932c3d4ef2621c3 SHA-256: 932e9063957fc7323aaa1fc55f97399e6bee8386765233534a3b800abf29a75a
184 Risk Score

Malware Insights

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

This PDF file functions as a link farm, containing numerous embedded URLs. One of these URLs, https://ggtraff.ru/strik?keyword=best+wand+vibrators, is identified as a malicious redirector. The document's structure and the presence of many external links suggest an attempt to drive traffic to potentially harmful sites, likely as part of a phishing or scam campaign.

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.
  • 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://ggtraff.ru/strik?keyword=best+wand+vibrators In PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/6812785.pdfIn PDF document text
    • https://zowupenejanelaw.weebly.com/uploads/1/3/4/3/134397621/vuteno_vavetuzu_domax.pdfIn PDF document text
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/6185613.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/2844f2611da22.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/novibulodesokariziku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f8acbc23643b.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/mesufo-vemuwin.pdfIn PDF document text
    • https://vemifibu.weebly.com/uploads/1/3/4/3/134354414/gemilej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f87253394045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f8eb8a329516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402932/normal_5f91371a1ae0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/46836e82-1adb-426c-938a-c3f93f994aa8/zidefogixodivobizaxax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad03c24e-831a-458e-891b-1a0873736b7c/39752775753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5935/2990/files/cognitive_therapy_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45944a56-c79b-4b05-8fab-8f9313d6811d/97142083205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/nedodepisage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e69c3bc-375f-49b6-9b4d-8ff0886e3b7f/subofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1135/6318/files/tibafabapumelefaxogomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc491d73-f314-42ef-abb4-49367a44e818/robukituson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a58a10e4-5bfd-4626-abc9-83ca05361c61/fipikoxulotejig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8945/files/rikorufaxotupuzujuvadoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc6f5aa-8df5-42e1-b22a-0b6ef3b22a4f/wurake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2675/7786/files/central_administrative_tribunal_act_1985.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_off00006a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6F 5128 bytes
SHA-256: c65eabda769365c07d02e4055c88c5053f4dd0ea8004411f88087b878fe098cd
font_01_sfnt_off00007c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C03 10476 bytes
SHA-256: 4f22d24e4083bee838632f28f621c417fee1932116cadba501d96a456b49d96c