Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4469f08098c5dc…

MALICIOUS

PDF

84.3 KB Created: 2021-03-01 16:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 3a6016dc6f21352757d8b295a7f3274d SHA-1: 5fab2d568e6bcec04cda8a660267b746c89ffebf SHA-256: ee4469f08098c5dc2eb50781b35589e1c1de502001666ca9f5f34cd451e5decb
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to disposable hosting, suggesting a link farm designed to redirect users to potentially unwanted or malicious content, such as the 'photoshop cs6 for android apkpure' lure. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=photoshop+cs6+for+android+apkpure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449996/normal_60224b84a04a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464869/normal_600fd173c16e6.pdfIn PDF document text
    • http://italdom.fun/pijulodenekivadogezu1gh3q.pdfIn PDF document text
    • http://smcjd.com/lincoln_weld_pak_125_hd_gunxq6mw.pdfIn PDF document text
    • https://gejilesiwurulu.weebly.com/uploads/1/3/4/3/134374779/kigojasefuto-lariwidiwer.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/jshi0cH/fireman_ed_quits.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/x1_dvr_box_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/5qhijKk/among_us_imposter_hack_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381105/normal_6008836b33eb5.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/g00igjc/2021_forest_river_arctic_wolf_287bh_for_sale.pdfIn PDF document text
    • http://mifvideo.space/571780038441o9uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424630/normal_5ffe6f60588ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_602404ac18a17.pdfIn PDF document text
    • https://kefavobora.weebly.com/uploads/1/3/6/0/136010588/ac61b0c2.pdfIn PDF document text
    • https://zedurobarudavur.weebly.com/uploads/1/3/4/0/134018347/dekovisuviwuwazidari.pdfIn PDF document text
    • https://veguxalefimas.weebly.com/uploads/1/3/1/3/131382166/sufib.pdfIn PDF document text
    • http://accface.in/39114351435b5tqv.pdfIn PDF document text
    • https://bukuduribo.weebly.com/uploads/1/3/1/4/131454389/1870526.pdfIn PDF document text
    • http://arnautmebel.ru/xorewuwdc5r1.pdfIn PDF document text
    • https://cdn.sqhk.co/raxasumo/7RtIgd5/9264346628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_6025ebba2019d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE9 5432 bytes
SHA-256: 7862e77090fc3e3e87d2a9e0f819b4eead2fb95c649ced1472953fe2a73d4458
font_01_sfnt_off00011f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5D 10796 bytes
SHA-256: 09d2e2fd71bfdc229cdc86c591f1a4b539d18a4f9708ed32cf6f903046665d9e

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