Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a94172129a34186…

MALICIOUS

PDF

69.6 KB Created: 2020-11-26 05:16:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 812710dfee89eda02cc519acdc8d8835 SHA-1: 1b367c4074ab5a8a4be6ddfed6e5a5ab4b74027b SHA-256: 1a94172129a341863a254683f715504dc4b0a279c18c24ad5967bc0bd2d7ea0a
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://cctraff.ru/123?utm_term=super+mario+world+gba+rom+download', which is presented as a download for a game ROM. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body, combined with the heuristic and ML detections, indicates a phishing or malware distribution attempt.

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://cctraff.ru/123?utm_term=super+mario+world+gba+rom+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f8fc1fb2138b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5fb5e4b5cba4e.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/e78660e2-8e8a-40f2-9cec-f84caa36ea34/89339337126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd7d900-70b6-4bc9-92c8-95ddb8be6b7e/15073173048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c62151-9103-438c-b66d-b27e31f29bf0/borderlands_2_in_memoriam_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1f83bb-ee29-4a25-91aa-88124112539c/55c3_bmw_e90.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nba_youngboy_concert_tickets_2020_los_angeles.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/chalkboard_sign_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86577ad4-4493-477f-990b-71a3baad6a7f/heroes_3_hd_edition_maps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd19b58-226b-4ea4-a222-f3f64a40dd4f/89761618573.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/97553967809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ce10e4-71e6-4f45-b4d5-6992d7fe6618/83493440762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5abfcc9f-57b7-449c-b2b3-bc143c52d908/zafitiganamon.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_off0000bb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB1A 5436 bytes
SHA-256: 037e7141405dbf4643ec49310573009bcde97c8df07fa9fc64a240abcd856732
font_01_sfnt_off0000cd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD89 10920 bytes
SHA-256: d2eec015740c3778ea8b74a216969909b6a5e1259d04bcfa5a0262ed1f70d974
font_02_sfnt_off0000f31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31F 16088 bytes
SHA-256: ba49a359edda73fb432b2118eee43e8681603f6c6f845ef214af08c3a95321db

Open this report in the interactive analyzer, or submit your own file for analysis.