Malicious PDF — malware analysis report

Static analysis result for SHA-256 48364b5b3e013f78…

MALICIOUS

PDF

82.6 KB Created: 2021-03-29 20:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 46737d15f388d48b714eadffe6e592d8 SHA-1: 60aa904c83671850de1dc6d5d13450c8018c21ed SHA-256: 48364b5b3e013f78d434eb925fe622941aa25eb29d3b2cae7c3d0788f43764e5
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or malware distribution, with one prominent URL suggesting a lure for game modification downloads. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content, likely through embedded JavaScript.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/wix?keyword=clash+of+clans+mod+apk+download+apkpure+new+version PDF link annotation
    • http://padapup.iblogger.org/zizoguvoraputulifiwolopor.pdfIn PDF document text
    • http://jegotaraxipux.iblogger.org/mitulakuru.pdfIn PDF document text
    • https://jafedemigizol.weebly.com/uploads/1/3/4/5/134588438/daxopin-lifetit-sunugufo.pdfIn PDF document text
    • http://renatoxun.iblogger.org/prsu_b._ed_syllabus.pdfIn PDF document text
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/zexukiva.pdfIn PDF document text
    • http://legugoboxebepe.22web.org/pakubuwutirudulajupumu.pdfIn PDF document text
    • https://zuxijonimobazi.weebly.com/uploads/1/3/5/3/135351106/3713614.pdfIn PDF document text
    • https://bujubupe.weebly.com/uploads/1/3/1/4/131437121/865653b.pdfIn PDF document text
    • http://doguzunagenuxo.22web.org/sena_20s_evo_manual.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/jifedefujodu/2007_bmw_x3_performance_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/audre_lorde_poems_about_race.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae7853ea-5ff5-4eb5-b763-fcf40cc5d04b/critical_race_theory_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/22643623246.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/pidavanewikikireramifuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b6207f-ed06-41c4-a945-6f94945ab349/fuzefonidikofeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ce3f79f-cca2-4914-b018-3a7f5ad467f8/quotes_about_becoming_who_you_are_meant_to_be.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a7f270-46fe-4233-9bed-f378c6dfffde/jipuvofov.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/dopugokesepiluxolefebe.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/zukubu.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/80887740439.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAE 5516 bytes
SHA-256: 762331db76815d4c04b7743b8b645e551b82335c05b27318a77b8cfd3e2b7e2f
font_01_sfnt_off0001025a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025A 10708 bytes
SHA-256: b9a71c11bcda43e4f6387d87be4021fd729a36b04a1bff56e40b4b30b4f5b448
font_02_sfnt_off00012712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12712 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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