Malicious PDF — malware analysis report

Static analysis result for SHA-256 d970f089cf4d0b3d…

MALICIOUS

PDF

70.5 KB Created: 2021-02-28 04:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ee2997f2466c78cf1c49f7d5e75223f5 SHA-1: 5045f0d10a48f22a1e9c4f4672084b3ddb5f8986 SHA-256: d970f089cf4d0b3d382047bc293cbf4af71bc34d3bf503d884adfcf899aa02bb
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 0.9998

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://xajibur.ru/aws?utm_term=us+army+web+gear+for+sale PDF link annotation
    • https://cdn.sqhk.co/badalozebale/Aghhjhh/panda_pop_bubble_shooter_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fusureviweki/hzwhjoI/7234150645.pdfIn PDF document text
    • https://lefusovu.weebly.com/uploads/1/3/4/0/134040443/verefenumufeger.pdfIn PDF document text
    • https://berekiba.weebly.com/uploads/1/3/1/4/131482976/jipikuzar.pdfIn PDF document text
    • http://raicen.com/peter_and_wendy_movie_watch_onlinemhd9x.pdfIn PDF document text
    • http://bopolubolef.mywebcommunity.org/lifamivatepozezupix.pdfIn PDF document text
    • https://tebeneka.weebly.com/uploads/1/3/0/8/130874559/8767586.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/how_to_do_standard_enthalpy_change_calculate.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/how_dangerous_are_reticulated_pythons.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/3aff238176d74ea.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/gPfqics/750539505.pdfIn PDF document text
    • https://dofufegudi.weebly.com/uploads/1/3/1/3/131381881/8887c1b95f1a3c6.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/ahiuKjb/mutiwavixaxamakubupaz.pdfIn PDF document text
    • http://zijixiteluwek.scienceontheweb.net/13835701816.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/EHXNBjg/chess_techniques_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/Qihhgjf/kipogizix.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/iXAggjj/23256315249.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E3 4964 bytes
SHA-256: a025e566e9dc1d40f4b43fb38e3db7958c6e45829ab9597a79d4cd65c5f4379a
font_01_sfnt_off0000d9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DA 10796 bytes
SHA-256: 365d07505a414478c16ab46ca8aa4d9611756ad82c0eae5cd05321077c10f5c9
font_02_sfnt_off0000fea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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