Malicious PDF — malware analysis report

Static analysis result for SHA-256 0297fea31d8e0696…

MALICIOUS

PDF

91.4 KB Created: 2021-03-24 08:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8214eb46531761058a6d07ebc1e4f93d SHA-1: 1fe017b450b1936351a66528b0bdb2fdbe2db629 SHA-256: 0297fea31d8e06968611418ef9cc47fe4c0938588166611a71f2c581b93d314b
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are part of a link farm designed to direct users to potentially malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a 'Patton heater manual', likely a pretext for phishing or malware delivery.

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://jumiwimov.ru/strik?utm_term=patton+heater+puh4842m+manual PDF link annotation
    • http://granitmetrospecstroy.ru/24902894279cq1i2.pdfIn PDF document text
    • http://beamorem.com/42973792163hnahd.pdfIn PDF document text
    • https://cdn.sqhk.co/mizipudi/iBgcgXU/om_nom_nom_commercial.pdfIn PDF document text
    • http://vashmaster.info/brother_p-touch_pt-d210_label_maker_fontsctcuh.pdfIn PDF document text
    • https://xivafotipumi.weebly.com/uploads/1/3/4/3/134322080/seburamabed.pdfIn PDF document text
    • https://pegepujime.weebly.com/uploads/1/3/1/4/131453637/78f04dacebc80a.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/jyihsmJ/make_you_meaning_in_urdu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/falevi/12473777917.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/57011154808.pdfIn PDF document text
    • http://nunejodututote.epizy.com/jaxaxogivawabezali.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/99324002874.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/81680223842.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/43258470500.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/fonudutu.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/english_vocabulary_word_search.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/tudemijukomi.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/beep_codes_viewer.pdfIn PDF document text
    • http://kijibabekisuni.epizy.com/castlevania_rondo_of_blood_ps4_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001144e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144E 5128 bytes
SHA-256: c9b4b3c936568d884c0a771811413af05981e1c20fd91c4b6474f98bd9800910
font_01_sfnt_off0001258c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258C 13768 bytes
SHA-256: 4c111ce3508f6b8aa92a7745a1eab658a778bcddb76cbe7e1cf711784a4d9961
font_02_sfnt_off000150aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150AA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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