Malicious PDF — malware analysis report

Static analysis result for SHA-256 337bb664ea478114…

MALICIOUS

PDF

88.4 KB Created: 2021-03-29 23:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: aea4fe77ed913e0f55060bd2291b320f SHA-1: a6e623ed2bfb4d5c75da214ea9a0336492abb95a SHA-256: 337bb664ea478114211d4264df8e9078840b4baef1f6272074bef026ea52ba49
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojanized document. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to downloading an Android application.

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://jumiwimov.ru/wix?keyword=facebook+lite+apk+for+android+4 PDF link annotation
    • http://idealica-itufficiale.website/rizufapikesam8ybz.pdfIn PDF document text
    • https://wibawewema.weebly.com/uploads/1/3/1/3/131398479/671ad6564fff3.pdfIn PDF document text
    • http://vodoroding.info/biminixaxujusalojuwundbkgu.pdfIn PDF document text
    • http://videohost.space/setofopitjrtyn.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/xekitulirejesimuve8klh5.pdfIn PDF document text
    • https://kunugamonigosa.weebly.com/uploads/1/3/1/8/131871761/7971315.pdfIn PDF document text
    • https://lafajadisevo.weebly.com/uploads/1/3/1/4/131454770/kelereramik_deguwusuzidoba.pdfIn PDF document text
    • http://xupenirulavep.iblogger.org/gusumogonijipobopape.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec82a11b-48c5-47cd-8c14-16227892ef04/5145335392.pdfIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_57d7c2df575a48299f3e5dfe60e50d90.pdf?index=trueIn PDF document text
    • http://lugirike.epizy.com/dewazedabojamurubutafim.pdfIn PDF document text
    • http://zogemidagubaro.epizy.com/yahoo_answers_uk_current_events.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a54f1ac-d214-431c-ae92-f37a6f70bf83/pidemubijinit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba9b9e3-0a1e-4ccd-8fc9-616c7376b4b3/my_passport_ultra_not_working_mac.pdfIn PDF document text
    • https://fac7854b-22c3-40b9-bef9-ee94a55a010d.filesusr.com/ugd/fba82c_163478bf03ae4f14ac2a1dfbd4350cfc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/pilafunif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc2537d8-c564-43bd-a7a0-72c2a70e4bf7/88986764483.pdfIn PDF document text
    • http://gerireg.epizy.com/64457080843.pdfIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_8bfee840222144caafe8d38a18480326.pdf?index=trueIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_6b518fbf57984943af4143ab09ca5c47.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e6bde5-b2c6-41f8-828c-1bfd147486ce/neribinokomoragi.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/osha_bbp_exposure_control_plan_template.pdfIn PDF document text
    • http://gaxomin.rf.gd/charge_sheet_format_in_marathi.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_off00010817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10817 5220 bytes
SHA-256: f596d3bf0cdfa66d0c7259e09d1dff837f456926afa3d04d750e71ab4d88e4a4
font_01_sfnt_off000119eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EB 25288 bytes
SHA-256: df517bde32b6656e79aa98473095317f2b6a73f86b0473c4fb3237b382ba5c96

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