Malicious PDF — malware analysis report

Static analysis result for SHA-256 3316f6980f663d91…

MALICIOUS

PDF

81.1 KB Created: 2021-02-26 06:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e9c1feb79ff6de59930bec679ee5e720 SHA-1: 526c1058aa31bb1521f663fe0c9161c4e8662c95 SHA-256: 3316f6980f663d9159d099baf39df2b94f7701029c549ff91f838b4081533bb3
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for car reviews, likely intended to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=2000+jeep+grand+cherokee+limited+reviews PDF link annotation
    • http://wisecreditscore.info/10482899730paut3.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/jijigDs/stick_stunt_biker_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454545/normal_5ff6bd5b834c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fedabb59e14c.pdfIn PDF document text
    • https://cdn.sqhk.co/tizudukokeni/Jjcrhcv/kupaguwawogafijezoxebi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494677/normal_5ffeb9c977e6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5ffcdb3540a94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454046/normal_6012932ae5fa9.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/Ejec9dz/call_of_duty_warzone_update_notes.pdfIn PDF document text
    • http://batut.space/hp_p1606dn_service_manual38qxa.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/hhgTjbA/amc_street_light_complaint_number_ahmedabad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_5fee467872515.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kujazidi.epizy.com/1652737935.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/candy_crush_hack_ios_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/wilderness_athlete_28_day_challenge_guide.pdfIn PDF document text
    • http://gamovomubapo.rf.gd/looping_in_email_template.pdfIn PDF document text
    • http://dominomufu.rf.gd/aetna_reimbursement_form_vision.pdfIn PDF document text
    • http://depegiwisa.epizy.com/aduro_hybrid_h1_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 5744 bytes
SHA-256: 4bdd236ef2614978ef694395911a923c2c69c9db540b75ffd80f41843ad597a8
font_01_sfnt_off00010324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 11080 bytes
SHA-256: 8258f66812f8ba0699b383e1a84645ced89aa023eea6f967e2d7149baae061cf
font_02_sfnt_off000128a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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