Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b8c33c5f1d6c9e…

MALICIOUS

PDF

88.0 KB Created: 2021-03-09 17:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 631eeb001e23e28dd10aaa49cb5a26e9 SHA-1: e6de2275ecd841f9460d8b083b8ab481ac1e8a2d SHA-256: 35b8c33c5f1d6c9e0037fbc480ea81b564a5a84e89654437f6e2fea2f9a59ab8
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=gear+one+pa2400 PDF link annotation
    • https://kivenawuvu.weebly.com/uploads/1/3/1/1/131163776/fojamitunajigum.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/jhhijbQ/11248606203.pdfIn PDF document text
    • http://zosuwalerikare.getenjoyment.net/90254399125.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/acquisitions_incorporated_d_d_5e.pdfIn PDF document text
    • https://cdn.sqhk.co/milibotobov/Dij1jdJ/word_jumble_answers_12_12_19.pdfIn PDF document text
    • http://gigezesuzobe.getenjoyment.net/meaning_administration.pdfIn PDF document text
    • https://cdn.sqhk.co/loboremetoxe/dhju3vr/puzzle_star_bt21_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/jvUjd8Q/stickman_legends_shadow_wars_mod_apk_free_download.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/83005325250.pdfIn PDF document text
    • https://cdn.sqhk.co/wipedekis/ihjcijS/bhojpuri_video_20183gp.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/dhb8Rgf/business_plan_sample_of_t_shirt_company.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/niditajupenewo.pdfIn PDF document text
    • https://bibikabefome.weebly.com/uploads/1/3/5/3/135392895/jugolanopu.pdfIn PDF document text
    • https://xakajebegufawev.weebly.com/uploads/1/3/4/7/134729098/bejenezugasevusuzoj.pdfIn PDF document text
    • http://tesekal.mygamesonline.org/49979775063.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/fogifijujotemibubutaxev.pdfIn PDF document text
    • https://xinufagepowe.weebly.com/uploads/1/3/4/4/134437511/wuvemipa.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/general_to_particular_example.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/tiIB8gi/sagafibusekoponoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/internet_manager_apk_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/26707569071.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/90966451455.pdfIn PDF document text
    • http://solarujarinobo.myartsonline.com/fewexozisamuw.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_off000115f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115F0 4996 bytes
SHA-256: 13be3a6a3833d30575ad974c24de5485b9dc88421e31eb13c620354a42d6d31c
font_01_sfnt_off00012705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12705 12468 bytes
SHA-256: c2700786200b59ce2e2fbbcc700d3f0d08d9a79f958577710c5bbcc8cb45bdbf

Open this report in the interactive analyzer, or submit your own file for analysis.