Malicious PDF — malware analysis report

Static analysis result for SHA-256 30286f3e126248dd…

MALICIOUS

PDF

86.4 KB Created: 2021-02-12 00:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 00c65fbb326a0e636a2d4eef0879dff0 SHA-1: 8a715ab5df42c77ad59254b45e03a6dc4af5cd0d SHA-256: 30286f3e126248ddff3be4ff281efd3448a541604a05923ee92e9ac342e80f4a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are numerically or generically named PDFs hosted on free web hosting services, indicative of a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as a phishing trojan. The embedded URLs point to domains commonly associated with malware distribution and phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://maypoin.ru/wb?keyword=bionaire%20bwm5700%20humidifier%20manual PDF link annotation
    • http://siditomema.22web.org/95820836762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fd355184a586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375515/normal_5fd0536663a7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425915/normal_601b286c608ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485580/normal_60059aa97f5f3.pdfIn PDF document text
    • http://tufataf.22web.org/26524559675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391642/normal_600968ae86a16.pdfIn PDF document text
    • http://itagreen.fun/trip_to_bhangarh_movie_480ppxvjo.pdfIn PDF document text
    • https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/robixavobunug.pdfIn PDF document text
    • http://molotkov.site/12006277485t5wh8.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/hjiaghJ/las_vegas_day_trips_to_antelope_canyon.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/YjagiBp/tekunawetirulagaxob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404757/normal_5fe544fe3d3e7.pdfIn PDF document text
    • http://gumazesetijub.iblogger.org/219649673.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465704/normal_60049eda75d2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5ff65a2f6913a.pdfIn PDF document text
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/dazixemazugurelamaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384825/normal_60047cf73d9b5.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/gY7jfjc/jiraroxemagenedibomupeke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vabanenutulaki.rf.gd/memifatotazatudafuko.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_off0000fb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6F 5596 bytes
SHA-256: 4288b9cfcd01a90645bf5a352c002783021ba3f7e552e59464fe0b1847219c9f
font_01_sfnt_off00010e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6B 11816 bytes
SHA-256: 6fd37456a6c769bbf11a67a16c9e223dac3db6eaa193dd9932baf6d4a03546a1
font_02_sfnt_off00013608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13608 16296 bytes
SHA-256: 1eb2d602a8f0fbd29cf35e28249ef192f748b5a163674ba4d9c287d47c1a48c9

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