Malicious PDF — malware analysis report

Static analysis result for SHA-256 9309c90201c4003d…

MALICIOUS

PDF

76.8 KB Created: 2021-03-31 17:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 24d13bd72cf354038487733a087eaefb SHA-1: df592d26baa0a8854ff0539f73efbc801d428e27 SHA-256: 9309c90201c4003d833b1c5c687887a195a1cc440dc26f52c1f0bbb9b9fc57b3
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 0.9996

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://dugedepap.ru/123?utm_term=action+bar+tutorial+android+studio PDF link annotation
    • https://cdn.sqhk.co/makulowujip/WjhjjLP/41650556469.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/xShgigd/21974393188.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/98471916371.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/e2Sifjf/jalezod.pdfIn PDF document text
    • http://kevebofuru.medianewsonline.com/al_nahar_newspaper.pdfIn PDF document text
    • http://milesatel.mygamesonline.org/university_vocabulary_list.pdfIn PDF document text
    • http://pasipodo.mypressonline.com/trigonometric_identities_solved_problems.pdfIn PDF document text
    • http://buzofenag.22web.org/obama_speech_download.pdfIn PDF document text
    • http://povisowalikim.scienceontheweb.net/dewalt_miter_saw_12_inch_manual.pdfIn PDF document text
    • http://pelubexeto.getenjoyment.net/rukenemuvotarod.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/sDRhggg/bajesizezafe.pdfIn PDF document text
    • http://bimizuzi.sportsontheweb.net/42572801285.pdfIn PDF document text
    • https://cdn.sqhk.co/tusenepobam/jagjb6T/ninja_foodi_air_fryer_recipes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_3e66571b04604b9e89eb41f556fa3150.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/kofitowajeza.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/how_to_redo_a_question_on_edpuzzle.pdfIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_4dc217ff25c24fb1a224114e6053e7a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ratixifo/wodawepa.pdfIn PDF document text
    • http://dojafeduzig.myartsonline.com/60359403596.pdfIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_f0f7a0092f234ac48bdb7bcffae00cdd.pdf?index=trueIn PDF document text
    • http://fipuxogililego.epizy.com/lutesegenagemobusedet.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/bipilekad.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_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5060 bytes
SHA-256: 94aa2bdaa90b80c19c8f1722ecbbe4cc3f4a7455e08bf302650bcc7e637638a6
font_01_sfnt_off00010143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10143 11048 bytes
SHA-256: 370d2d61b93566d5c0734879d58a10fa39e99877c812ebd855db6b5f95bf146e

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