Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bdee22e4f2e3ca…

MALICIOUS

PDF

72.8 KB Created: 2021-02-21 11:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e24595d9e49d99fe13f9d7d3d68398c3 SHA-1: cda0bd82d0a1587e6b0bda7aec5324be8d2a3541 SHA-256: 72bdee22e4f2e3ca57af7d1731151034aa880f0e10087e6f78e1972bb9b7cc49
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a significant number of external links, suggesting a link farm or phishing attempt to direct users to potentially harmful websites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/123?utm_term=the+viking+spirit+epub PDF link annotation
    • https://dewapapowirise.weebly.com/uploads/1/3/1/4/131438248/dd555d0a.pdfIn PDF document text
    • https://tobalewaluwe.weebly.com/uploads/1/3/4/4/134437424/4f690c431050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491688/normal_602973a20765f.pdfIn PDF document text
    • http://ch-redirect.icu/20688680027i7uul.pdfIn PDF document text
    • https://betebawaxudu.weebly.com/uploads/1/3/5/3/135388356/3476469.pdfIn PDF document text
    • http://deutschebank-meine.com/telugu_movies_2018_listys27b.pdfIn PDF document text
    • http://copyrightprivacy.site/14617918392iuvq4.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/201d2fdb6c4.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/geraromu/newufisokowo.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/burger_king_whopper_nutrition_facts_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/46605590750.pdfIn PDF document text
    • http://gexovudin.rf.gd/90164084885.pdfIn PDF document text
    • http://vawutalakomu.epizy.com/happy_song_frank_mills_piano_sheet_music.pdfIn PDF document text
    • http://bikawojesagoso.rf.gd/jojizinuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/caitlyn_guide_op._gg.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/19077340694.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/30906072186.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/rudisupilapibumibokosupi.pdfIn PDF document text
    • http://josejutolaxof.rf.gd/9271362239.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_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 5052 bytes
SHA-256: b4de93d855cbe2ce7c00d5ae188a36fc98701f0cdf482bca8329742e0c233883
font_01_sfnt_off0000f1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FF 10696 bytes
SHA-256: e42343b819ce8a78aeb2848702473a08f7810e661fc531740911935d134f63ed

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