Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce326c3cd376231…

MALICIOUS

PDF

66.3 KB Created: 2020-11-25 18:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fb005c1e068fea29222a15838bac32cb SHA-1: 1fd9b9d145f0f389a7a7450bcf7f28cd106a5c37 SHA-256: 2ce326c3cd3762316e6bd06b5145cdbbddb954db3669b93525457fc5070a590c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=vacationers+guide+to+the+outdoors'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/strik?utm_term=vacationers+guide+to+the+outdoors In 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/8bc7e396-e7cb-4e7e-b4bf-8ba19ef7ccce/65840339868.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/28808962755.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/kuwimesugurogem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c259c9-ed45-4ef6-af79-c3bc07e0491f/the_bear_anton_chekhov_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2740d9-6391-40a8-a83a-dd3f12f5736e/88497692706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb52623c-96b2-447b-982b-2442c0992015/gatowoxexopawaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/math_worksheets_grade_7_gcf_lcm.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/biomedical_informatics_msc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ac0c19-358d-4d6d-8b92-41826fc11cb9/tv_tuner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c1f75e-c5fb-49c0-882b-0930e18f3870/wulibupukubogadubotepepag.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_off0000c7ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EE 5132 bytes
SHA-256: 3fb38c9058b11a0123283a4773c54300069a82d1297b6deb6a7e11f56515be8e
font_01_sfnt_off0000d95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95B 10380 bytes
SHA-256: 82042e41ef1a5c68aee274fd5acf734f6d91143d42221fd8edf6a496fed3dc5f