Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04cc6a22c455a8c…

MALICIOUS

PDF

77.8 KB Created: 2020-12-19 08:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7a008b4bde8224a7d9e8101427ea2a24 SHA-1: e48cd6da86662ec9785ce9b07960d0f1b3fb07c9 SHA-256: f04cc6a22c455a8c37107bf12d0e8c195aedeb5c01d6730abbf60f365726367b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of a large number of external links, including a link to 'traffnew.ru/strik', suggests a link farm or phishing attempt. The document's structure and embedded URLs indicate it is likely part of a phishing campaign, possibly using SEO tactics to lure victims.

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://traffnew.ru/strik?utm_term=words+that+begin+with+ge PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496013/normal_5fbea544b1c14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423471/normal_5fcc0365a7cbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f93ccdbbb096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479224/normal_5fcb96d7468c9.pdfIn PDF document text
    • https://joxoxego.weebly.com/uploads/1/3/4/6/134664344/muwevisemesamibino.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f7e101-7b20-4b88-87f0-76b1df9254ac/xulakukup.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/castle_clash_hacked_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7142ca41-383d-4609-9df4-52063362df08/la_raza_csmica_jos_vasconcelos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9cffce-1367-4b98-b839-6ae020820d86/80290712287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/316b3c0d-f76f-4999-9bf3-9edb60184784/5th_edition_d.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe33fc3f75b166439fe9af/1606300674282/la_crosse_wifi_projection_alarm_clock_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac789f8d-e512-4579-b07e-6716135a4a37/kogimetikabuzofuvab.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_off0000ce5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5C 5300 bytes
SHA-256: c8d37da7cdb678f26df370b252dff29451839b2be9efc1f6d43eb07a1cc42e9f
font_01_sfnt_off0000e06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06F 16568 bytes
SHA-256: 1aa64a2bd3f099f517ff5906a9abcfcb23e165441cb8dd213b9402a280e95167
font_02_sfnt_off000113ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113AD 16088 bytes
SHA-256: f52bd4b593644f02f0f619435e5fa065f797232cc4e46520c8624770b7971a45

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