Malicious PDF — malware analysis report

Static analysis result for SHA-256 616905f8802920db…

MALICIOUS

PDF

78.4 KB Created: 2021-03-24 04:29:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ec71fea4b09030fde758c34016ed7614 SHA-1: 8ea569d97d92928a956f197c6c77ceefe29d3cc2 SHA-256: 616905f8802920dbc712fd3388f3d9c111d3dae8b83f649878d3a783d6b23a49
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to disposable domains and employing UTM parameters, indicative of a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

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://bologen.ru/123?utm_term=water+world+full+movie+in+tamil PDF link annotation
    • https://cdn.sqhk.co/nemazuwigumo/4Clhigd/xexusin.pdfIn PDF document text
    • http://cheapestshop.xyz/xapijifunozubogubezivavomws96g.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/troy_bilt_econo_horse_tiller_for_sale.pdfIn PDF document text
    • http://espaceabonne.com/software_architecture_designbvr3i.pdfIn PDF document text
    • http://afracheat3.xyz/fojepirajesivuresote4n0.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/purple_cow_seth_godin_quotes.pdfIn PDF document text
    • http://nawitebexu.medianewsonline.com/ximuxor.pdfIn PDF document text
    • http://discovljzg.fun/38373197650jgw87.pdfIn PDF document text
    • https://cdn.sqhk.co/berazanoga/jiichhu/idling_to_rule_the_gods_spend_god_power.pdfIn PDF document text
    • http://aarbuz.space/28697293785g5f63.pdfIn PDF document text
    • https://cdn.sqhk.co/rezejigobip/ibLL3gf/weather_radar_michigan_upper_peninsula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gazitif/architectural_lighting_design_a_practical_guide.pdfIn PDF document text
    • http://sarutufasiko.atwebpages.com/lofobofinupubiwo.pdfIn PDF document text
    • http://falariwupap.myartsonline.com/adda247_banking_awareness_book.pdfIn PDF document text
    • http://gafodix.myartsonline.com/sogibanal.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/businessman_telugu_movie_songs_video_songs.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/open_source_music_appreciation_textbook.pdfIn PDF document text
    • https://e6343aec-df69-40e7-9959-3c0c55bf73c9.filesusr.com/ugd/6a9017_77e89b93da1d4d6f80ffadc0a51eacc4.pdf?index=trueIn PDF document text
    • https://264cdfe8-48fc-440e-bff3-938583425051.filesusr.com/ugd/cd20dc_f190272d94e649009da5e154b3dafcb5.pdf?index=trueIn PDF document text
    • http://rukosivujuxu.atwebpages.com/epson_stylus_photo_1400_ink_pad_reset_utility.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_084f08bda0a544b7be1a7945d3ac70ee.pdf?index=trueIn 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_off0000f5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A8 5040 bytes
SHA-256: ff7a3ab7ad48b3ec184f5cc6bd791d82d0e35f5db5c9db110f8c9980f0380aa2
font_01_sfnt_off000106d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D5 11124 bytes
SHA-256: a96c5566851c1655641729a7ed96ab90a5bb631c93d2104ae0a20a27450a2b7c

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