Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2b2c05408822e6…

MALICIOUS

PDF

45.9 KB Created: 2020-10-20 01:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4adbfc1bbfaf6f489370871c0a07b55c SHA-1: f6293a5e0fa9265d1b523d9b7fb27e631f079748 SHA-256: fa2b2c05408822e68fb30509e37f1fdc33efeeb1de351463e4361806bd676d63
244 Risk Score

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/bc903b28.pdf.
  • 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/pify?keyword=fighting+with+my+family+parents+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_5f8d7483149cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5f87be255aa3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8d619d96d6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8b3776bd583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f8d13b510892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f8e034644eb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8afc27598f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f875ab216912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f89dd6188c04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_5f8c1273ddd69.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/bc903b28.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/nekisofu-zedutuwusixo-zaxijenobowu-vujenoroviguka.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/zogoxejajegoniduwo.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/rixep-wusila-fumisabimajavaz-xatexozufu.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/vibaxalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0250/5627/files/beeswax_furniture_polish_amazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1379/0622/files/neraxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/altivar_31_inverter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/fidavavofutoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7806/2758/files/boneless_girl_game_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/439092bf-973e-4de4-bdb3-c42dc3f9c911/zebasewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5461e07e-8408-4c03-9ff6-087c604136ce/worororurepidoxugupazejib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df3cbdf-0450-43d5-b905-9563f02e2b35/77524902258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3934ce1-5dd1-4e75-b3be-0c415c8cc7ed/31894444423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561610cf-5544-4ae5-a10e-76ab3c9f84cc/99186901443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b288fe2e-cad4-4448-8ae4-94297dd01125/81158918544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a14bab-2285-415c-9cd3-54192fe8dfd7/46770664690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6afe00c1-535b-4a9e-bf20-0ba250348d20/xanthar_guide_to_everything.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa71aefe-68fe-4519-9ba8-a5475b72f35e/7644114791.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_off0000739b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739B 5604 bytes
SHA-256: cb22baa4499c2edcca31ec2227bca3ed2e30c67193e0ab9ab0fd2d684f3ea964
font_01_sfnt_off00008691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8691 10304 bytes
SHA-256: 1affeaaf18e7c53f1490882e2ee719bf3193b66e48ba8ae537e9c509a26856b9