Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0eb767e2ac0d90…

MALICIOUS

PDF

86.2 KB Created: 2021-03-09 18:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 979f06830b02dc0b116bce692d1316d6 SHA-1: 8dcac20e420d6b41ed557921ba2f0c86bcef7ba3 SHA-256: 0e0eb767e2ac0d9071b9478b8e3645d4fbbccfc4161df1bd21bb99e1df091f2d
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a malicious link farm designed to redirect users. Although no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score point towards malicious intent, likely involving the download of a second-stage payload.

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
  • 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://botokaw.ru/strik?utm_term=mesa+de+som+yamaha+mg20xu+manual PDF link annotation
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/8434b6ac8.pdfIn PDF document text
    • http://4gusevshop.space/12729278208vsdj9.pdfIn PDF document text
    • https://lebivituwaw.weebly.com/uploads/1/3/1/8/131856954/bokopejezafuxu-mawulepimox.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/uhb0ihh/fast_and_furious_rc_drift_car_rx7.pdfIn PDF document text
    • http://podarokinsta365.site/169896714155ho1e.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/whirlpool_certified_repair_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/hdt9iXp/97802700291.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/sumivosutib.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/23136313348.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/gfhfTrG/59968265661.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/hb6kjbZ/33969383948.pdfIn PDF document text
    • http://immortal-sho.club/xajajajaxozunamuxaxewekidjcmv2.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/tojazudibumogab/wujuvenuvugurufox.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/brush_chalk_photoshop.pdfIn PDF document text
    • http://tikatogivuso.rf.gd/69368171377.pdfIn PDF document text
    • http://kagokonutuvep.epizy.com/fubitogajow.pdfIn PDF document text
    • http://merovuditipin.onlinewebshop.net/is_there_a_natural_way_to_quit_smoking.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/afterburner_pc_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/tapakivofefikomemof.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_off00011316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11316 5592 bytes
SHA-256: e43e4e76e0ebefe08f7bae9847f02507bc91bff59e5f83bf1b0d6a08bed7b655
font_01_sfnt_off00012618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12618 11068 bytes
SHA-256: 952161f648d98e966081b98036d2e7d589dd8332f3bf1a92e1a11a57011efbab

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