Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bacc37d2ac453e7…

MALICIOUS

PDF

79.3 KB Created: 2021-04-24 06:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 08b12e8e5c4f75c435f2c8649f5f312b SHA-1: 50e319fa535065590ce6a4431043bf951f47eb6a SHA-256: 7bacc37d2ac453e743113c7bb379f5b514988a34244764bda28761fbcd5b2c41
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://ponafet.ru/strik?utm_term=total+gym+xls+accessories+ebay PDF link annotation
    • http://mybiol.site/house-tree-person_test_examplesfn2eu.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/babylon_mystery_religion_ancient_modern.pdfIn PDF document text
    • https://sarununow.weebly.com/uploads/1/3/4/3/134366188/sijivixexuwojeg.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/dJThede/84825212973.pdfIn PDF document text
    • https://fakadaro.weebly.com/uploads/1/3/5/9/135961508/423794.pdfIn PDF document text
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/3298664.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/NvNhhgd/special_rambo_game_download_pc.pdfIn PDF document text
    • http://dokukuke.mypressonline.com/15337869242.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/f7jc8GV/31530576764.pdfIn PDF document text
    • https://pogixovupo.weebly.com/uploads/1/3/4/6/134690118/zetewipasek.pdfIn PDF document text
    • https://cdn.sqhk.co/gixekoji/Ggojad4/datijilorolotoge.pdfIn PDF document text
    • https://cdn.sqhk.co/famagafe/bKhfggw/ted_talks_podcast_npr.pdfIn PDF document text
    • https://tumunuwixa.weebly.com/uploads/1/3/1/3/131384432/a9efe879c12c.pdfIn PDF document text
    • http://help-bluebadgecenter.com/gukixadaq008f.pdfIn PDF document text
    • https://fapixuguxoga.weebly.com/uploads/1/3/1/0/131070829/juweboxukif-komim-sepimofonured-lusazufuwafepox.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/mepafegedod_kakuposupem_jaratobef_lavizodevar.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/b27fda3d-3525-418a-b5aa-08a2ca095b57/46766873634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8111ab4-77c7-46ec-979a-b3a4667e789e/22532756907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363a44e9-6642-4343-9f22-f53bb61f4046/gedat.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73C 5380 bytes
SHA-256: 61fb260ede2705c6cdca905129b12aa9a45ee617140580cf20e5d0a0800e9df6
font_01_sfnt_off00010986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10986 10908 bytes
SHA-256: f7f8cf3279093e6065c61af603eed9396337a73a6b31c2373e6c818c4b7f6af0

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