Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7fc615f01f4d41…

MALICIOUS

PDF

70.1 KB Created: 2021-03-29 21:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 082f7fadec614bd0700b722f12d95fb6 SHA-1: fc1af02772ff5e310367254e009459aebef26b8c SHA-256: 8b7fc615f01f4d411946c5a62da57d9e0111d6f5c49bcc0659a017c8c9121561
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by multiple heuristics and a machine learning classifier. It contains embedded links, one of which, 'https://yafferge.ru/wix?keyword=panasonic+lumix+dmc-ts25+manual', is identified as a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a camera manual, suggesting a phishing or scam attempt. The presence of numerous links to disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=panasonic+lumix+dmc-ts25+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388271/normal_605d6c96aa0b7.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/e4mhhii/22477650911.pdfIn PDF document text
    • http://jibakerutev.mypressonline.com/82190014287.pdfIn PDF document text
    • http://antonioita.fun/punisovukigevn2b8.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/tubenofatuka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497369/normal_5fe0e4d6c9ffa.pdfIn PDF document text
    • http://purigoguwoz.22web.org/posusavi.pdfIn PDF document text
    • http://inmyshtangen.xyz/rexam46jc8.pdfIn PDF document text
    • https://cdn.sqhk.co/rudugebakivo/AMr6jhC/radio_fm_tuner.pdfIn PDF document text
    • http://vbruti.site/fulufegobisdfwh.pdfIn PDF document text
    • https://cdn.sqhk.co/zirevazul/Q88ijjc/hornblower_san_diego_harbor_cruise.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/dkhx1Yw/zigzagoon_evolution_galar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wijotifiku.rf.gd/cdc_influenza_guidelines_pregnancy.pdfIn PDF document text
    • http://saboveliga.myartsonline.com/tratados_y_acuerdos_internacionales_de_mexico.pdfIn PDF document text
    • http://lufafutogixafu.rf.gd/que_es_una_composicin_en_artes_plsticas.pdfIn PDF document text
    • http://wupuwijekoja.rf.gd/9859083289.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/53508491556.pdfIn PDF document text
    • http://gefilodeza.myartsonline.com/waiting_for_the_barbarians_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/7129374543.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/social_science_research_network_impact_factor.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_off0000d2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FA 5348 bytes
SHA-256: 1c06034176cf6a70257c9d1b39f0a0e0abb90ecd9d014818aa10765e06cd8857
font_01_sfnt_off0000e529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE529 11280 bytes
SHA-256: 40bff596a2e295af45f28ce49261e23b4a4b8154800575ff2932dd2092e21d92

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