Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae92181db9dc986…

MALICIOUS

PDF

74.6 KB Created: 2021-02-08 00:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2173ac03fd394f338970bd395848ef3c SHA-1: 4a985d8ef581ca91d1b1a2dece6a248787baf45c SHA-256: 2ae92181db9dc986cf23ee564e4c3e86e108dda11526b3ff16266cfc0e3f2ffc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs that redirect to external sites, specifically 'https://jacksth.ru/123?utm_term=rogue+fable+3' and 'http://wobijamitiz.iblogger.org/guided_access_forgot_passcode_iphone.pdf', which are likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to 'Rogue fable 3'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=rogue+fable+3 PDF link annotation
    • http://wobijamitiz.iblogger.org/guided_access_forgot_passcode_iphone.pdfIn PDF document text
    • https://nixodogal.weebly.com/uploads/1/3/0/7/130739919/e3e52341.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453718/normal_60206df79ee04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425933/normal_60137c9707067.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384628/normal_600686b070c58.pdfIn PDF document text
    • https://sekitajed.weebly.com/uploads/1/3/1/3/131383533/jizepilogusuteg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458124/normal_5ff3844f4021d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rikulovesemura.rf.gd/16982188033.pdfIn PDF document text
    • http://laletanegimiw.epizy.com/kixegokabuwugizotugotetij.pdfIn PDF document text
    • http://viminug.epizy.com/diccionario_biblico_vila_escuain_gratis.pdfIn PDF document text
    • http://jalugegaru.epizy.com/53471288498.pdfIn PDF document text
    • http://simipibenafar.epizy.com/46885374037.pdfIn PDF document text
    • http://fasitefikiseli.rf.gd/zatixuvilofigumile.pdfIn PDF document text
    • http://sujuxokilir.epizy.com/bebolatomesol.pdfIn PDF document text
    • http://gusadixesexa.epizy.com/notch_battery_bar_paid_apk.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_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 4972 bytes
SHA-256: c2126da3ad4532f6649fb2ab001b8dca494a87a7011973d613b506192577783e
font_01_sfnt_off0000efcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 14656 bytes
SHA-256: e05c2a0c0c32539cc2e47d62ef2650fc598ac63d288b36a30f2a43fb6cad3922

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