Malicious PDF — malware analysis report

Static analysis result for SHA-256 573fd2b477f12176…

MALICIOUS

PDF

86.7 KB Created: 2021-02-15 04:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: c86182107225a8c2855e67c48c95f3cc SHA-1: 112d7ecdbf93967787a78e3288088933d0abd2cc SHA-256: 573fd2b477f12176b7d427bde6cafe5ace0c06b1293fe1b0c41d33f1ec3a489c
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious content. An embedded URI points to 'maypoin.ru', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI strongly suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=michael+vey+7+pdf PDF link annotation
    • http://devicesprotectionforusers.site/239107115765f1x2.pdfIn PDF document text
    • http://pubguckazan.com/laptop_tycoon_mod_apkpb9ym.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/jLLijrj/60252529303.pdfIn PDF document text
    • http://antileqphh.site/9578419745tm2pg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371266/normal_5ffb3441b8785.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408195/normal_6008ce07b465e.pdfIn PDF document text
    • https://cdn.sqhk.co/dojerilu/gjU0Fib/mini_golf_lancaster_pa_rt_30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_5fe7513a2780a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fc82a4344a38.pdfIn PDF document text
    • http://evakuator-uga.ru/vuxinefusodojeguzofovezvn9dc.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/nuxomigo/22968376860.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/76896126275.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/83251126493.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/jingle_bell_song_free_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/new_bollywood_movies_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/ultrasound_guided_thyroid_biopsy_technique.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/atlantica_online_indonesia_full_client.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/49746764761.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_off00011774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11774 5216 bytes
SHA-256: b069a5784f58212444d3ccaa166a1e32943398ab84f1ea19882d049646468b7c
font_01_sfnt_off0001295c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1295C 10612 bytes
SHA-256: e1f2eacc03215d9f6899d13b9b05ab85ead1c48141bae1c3afee44cb012b10c5

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