Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fdd177f7810e29…

MALICIOUS

PDF

80.3 KB Created: 2021-03-06 01:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ab342037f6ddd0aedb43a11f86523303 SHA-1: f8f49049284e8cd6daac4ab63ef4f875f69f1736 SHA-256: 62fdd177f7810e2948557bb72abf9d92b00bc7a4fb3a1aa1f6a9ae01580c7b71
126 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 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
  • 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://golowaki.ru/award?keyword=iso+9001+certification+course+in+india PDF link annotation
    • https://cdn.sqhk.co/jupufopil/hfhhifg/58736153401.pdfIn PDF document text
    • http://lnstagrambusiness.com/cheekh_drama_ost_audio9cwi2.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/nivezobe.pdfIn PDF document text
    • https://wuvepadin.weebly.com/uploads/1/3/4/7/134714831/259666.pdfIn PDF document text
    • http://smartcreditus.info/377720381641cs9u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403260/normal_5fe3ec5c9707d.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/what_are_the_4_forms_of_writing.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/39858485456.pdfIn PDF document text
    • https://zisinifaja.weebly.com/uploads/1/3/4/5/134599776/2153284.pdfIn PDF document text
    • https://cdn.sqhk.co/sabimejuka/vEgfPhe/slime_defense_idle_tower_defense.pdfIn PDF document text
    • https://cdn.sqhk.co/pifizumux/bTXge3C/iphone_8_120hz_display.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/MJgeNii/redragon_keyboard_blue_switches.pdfIn PDF document text
    • http://fipizilemuwob.medianewsonline.com/76486451963.pdfIn PDF document text
    • https://xifupanudolegu.weebly.com/uploads/1/3/1/1/131164204/367d88.pdfIn PDF document text
    • http://uose.xyz/piguvupeverazudum108q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370302/normal_5ff42d08a1630.pdfIn PDF document text
    • http://gachihyper.xyz/giwabugirunerojojapuld0tny.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/fajixe/regukebasalenigodu.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/gsat_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/bkash_logo_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/correct_plural_form_of_bronchus.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/18495711678.pdfIn PDF document text
    • http://kegigija.atwebpages.com/rebapuluwegag.pdfIn PDF document text
    • http://josesomesube.myartsonline.com/72842698794.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_off0000f7a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A0 5268 bytes
SHA-256: 02977914b541ca77219aae2141aa5e2b58352a7d89984c82f47bf48051714218
font_01_sfnt_off000109a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A0 13288 bytes
SHA-256: bb28552debf127a361dc5234bb55f75d37234e78ae5f36aecaaa84cbe002ac52

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