Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1d450ec5b19068…

MALICIOUS

PDF

74.3 KB Created: 2021-03-26 05:27:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a096b856e8493c1e6ed6d5387892b4ce SHA-1: 9a78e2a206843dd0ce0c52083cb767858b3856d0 SHA-256: ba1d450ec5b19068de0560fbf7b4e8c0c9e7f0c4004ae8aad4b9b927a999e6a2
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 0.9993

Heuristics 6

  • 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 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://jumiwimov.ru/strik?utm_term=case+files+psychiatry+6th+edition PDF link annotation
    • https://zobanegasub.weebly.com/uploads/1/3/1/1/131164549/66272f9973c1c.pdfIn PDF document text
    • http://vugijow.iblogger.org/negokolijomumo.pdfIn PDF document text
    • http://siteznakomstv69.space/industrial_electrical_symbolsg137a.pdfIn PDF document text
    • http://hot-money.fun/famojozukefaxebzrtjk.pdfIn PDF document text
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/rulufojuxurafe-jetifomemo-bikutagipila.pdfIn PDF document text
    • https://zoxexakaxikat.weebly.com/uploads/1/3/0/7/130739387/8368262.pdfIn PDF document text
    • http://ogranicbio.fun/nesitakimeso4dgfc.pdfIn PDF document text
    • http://notdull-eng.online/how_to_watch_pippi_longstockingd5udh.pdfIn PDF document text
    • http://teksol.xyz/first_oration_against_catiline_summary6qspt.pdfIn PDF document text
    • http://babbieshop.ru/wararotuzedifeetx37.pdfIn PDF document text
    • http://bidusifekinu.66ghz.com/nasogawisazamixos.pdfIn PDF document text
    • https://titamifafipife.weebly.com/uploads/1/3/4/3/134315234/2627978.pdfIn PDF document text
    • http://itash.space/xisatulupifegefoy2j8.pdfIn PDF document text
    • http://islta.fun/63737736080aworq.pdfIn PDF document text
    • http://ropejolun.iblogger.org/budget_allocation_2018.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/ef1766f6-5f8c-4037-8ae3-109b094b90d0/29031075474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9297c48d-c5cb-4ae0-a06c-2f2310664d11/is_emdr_training_worth_it.pdfIn PDF document text
    • http://deronug.epizy.com/56536322386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c332f4-dbcb-4487-a523-22e7a1971c63/el_nombre_de_la_rosa_pelicula_descargar_espaol_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3291c8a9-54c6-4531-bfbe-55fb4ed21504/where_to_get_parts_for_kenmore_appliances.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c75bc1-7a81-4cb5-ae2c-8edc3b6ce708/607615632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a141f7-2abc-4bde-8b08-e93fc4ba7649/duzapupulatusafavaniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33e95c65-4985-4602-a7f2-88cc2d9da9eb/51053453924.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_off0000e404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE404 5404 bytes
SHA-256: 5ae92dbb0e59019a02e18a928f205152dd4c19938920810713e87278d7c92f84
font_01_sfnt_off0000f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 11300 bytes
SHA-256: 1cd8714b750819f81288962ee67b324507cae55ae27922c95733ad1039b496ab

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