Malicious PDF — malware analysis report

Static analysis result for SHA-256 b009bc7ffd0e15d4…

MALICIOUS

PDF

80.7 KB Created: 2021-03-13 16:02:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b31416771b4203860a96f396f585f0de SHA-1: 9c764bc921d3f0fd006639b8aa023de19fb914e0 SHA-256: b009bc7ffd0e15d4d2c77bdda6a01918497c6ac0751c2271f2190021be1b886c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=how+to+fix+samsung+dishwasher+lc+code PDF link annotation
    • http://indital.space/reduvxz603.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/fS8hcPQ/read_with_phonics_games_app.pdfIn PDF document text
    • http://lifegirls.site/97239841683nrwvw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426416/normal_602a0ada9db06.pdfIn PDF document text
    • http://lizuzezusad.medianewsonline.com/10057826347.pdfIn PDF document text
    • http://repaircreditscore.info/1956206661j6gno.pdfIn PDF document text
    • http://velesvoyage.ru/rawuzezuzeparutixigaj90ts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417306/normal_5fe3b65c374ff.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/Wighdge/the_yellow_wallpaper_critical_analysis_essay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459320/normal_6002e38b11926.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fd5f3531ef9f.pdfIn PDF document text
    • http://neuroncraft.online/tifux7g19z.pdfIn PDF document text
    • http://fubikopelemom.mypressonline.com/what_are_negative_character_traits.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/the_language_of_composition_2nd_edition_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/58847518336.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/segalunusakizavatubaviki.pdfIn PDF document text
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_68a3047decd141988a2abc61325bc125.pdf?index=trueIn PDF document text
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_792874dc6b3a4c66bba85a91f47e01c6.pdf?index=trueIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_1fe75a7819444ce98587d8dca87a270e.pdf?index=trueIn PDF document text
    • https://3175e58c-9db9-4d87-bcb9-15e03531d93d.filesusr.com/ugd/c93210_02a6be1a215243a0a2d2f42a72331ac1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/sokakuresixawisosemanod.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_off0000fc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC32 5556 bytes
SHA-256: 8062468e9126d9e29171abaecdd0665222272c19753cdb02c36c49e543b73a54
font_01_sfnt_off00010f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F06 10828 bytes
SHA-256: 9bd7cc94c46f3f76b5cc487134dc0cb6a5dc8901bddd7cb63a766b42a0d7d41d

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