Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2c169ead53e782…

MALICIOUS

PDF

74.1 KB Created: 2021-01-11 23:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 28844a8c826cfadfb3062edc604787a7 SHA-1: f474720cae4b7fb7a1710beac19e5bb5defdef98 SHA-256: 1e2c169ead53e782b084dac0a818836c3e08e5b1b7d5bd96f1f6b3444912c25a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for a PDF redirector link to 'ggtraff.ru'. The ML classifier also strongly flagged the PDF. While no scripts were explicitly extracted, the presence of a malicious redirector URL suggests an attempt to lead the user to a compromised or malicious site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/aws?utm_term=chocobo+color+guide+ffxiv In PDF document text
    • https://cdn-cms.f-static.net/uploads/4479933/normal_5fc1039279c9c.pdfIn PDF document text
    • https://site-1176342.mozfiles.com/files/1176342/tobigaf.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/hbjcTjj/space_cadet_pinball_cheats_pc.pdfIn PDF document text
    • https://site-1178883.mozfiles.com/files/1178883/navokozimupe.pdfIn PDF document text
    • https://cdn.sqhk.co/rusobotakox/4Qsjfif/woodworking_projects_for_gifts.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/0MKhjge/31291403312.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/Qrhangf/pixel_world_game_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490917/normal_5fed7c2f1b86c.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/mejigavukolu/29252808551.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/3756469754.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/ae_mdx_500_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/windows_office_2010_activator.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/temafabo.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/senorita_piano_sheet_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/tuwilatez.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_off0000e583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 5068 bytes
SHA-256: ec1979f9bc5f80bec7c8e689d0469817f87d343d099764d1dc10d0df25228ec1
font_01_sfnt_off0000f6bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BF 10800 bytes
SHA-256: 142f19ae6737a9d056d1d3011c9d6f567d6318bb3f64291ff879dff3bcb34e84

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