Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ffad2f6d708613…

MALICIOUS

PDF

74.0 KB Created: 2021-01-13 17:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 641e4b812bdbe71671543dcdfc1ebd46 SHA-1: 7b8daf2b4db552f255598cf8bcca39ca04eb81e9 SHA-256: e0ffad2f6d708613e332a9461eec15a02cc478640caa99e4468d5cb5a71c9695
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to a suspicious domain, likely serving as a lure for users to click and be redirected to a malicious site.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=area+code+203+zip+code In PDF document text
    • https://static.s123-cdn-static.com/uploads/4386836/normal_5ff16c327a782.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/j3Fdhgp/64658538494.pdfIn PDF document text
    • https://site-1176782.mozfiles.com/files/1176782/47860434820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380863/normal_5fba29dd1dd1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368972/normal_5fcd547fb758d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454164/normal_5fa3b2a404c64.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/heV4dxW/muse_dash_marija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5fbd3a283e5dc.pdfIn PDF document text
    • https://site-1201024.mozfiles.com/files/1201024/40636306564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f9bd4d15d25e.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/rexogeguxosix/gizozunoxabe.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/takutekolomelibonegupad.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_off0000d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD888 4936 bytes
SHA-256: 548888621931b16e4f3ac9f5c7de1fd5466f9abebe49d713fc02ed78d24046a4
font_01_sfnt_off0000e956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE956 10636 bytes
SHA-256: d1c02dc8dc1418f5ee7cfcafd09576c33605239a8f460718b362346616dcdd19
font_02_sfnt_off00010d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D75 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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