Malicious PDF — malware analysis report

Static analysis result for SHA-256 4db60ad40139e0e5…

MALICIOUS

PDF

70.0 KB Created: 2020-12-22 15:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2e53bfacbb6725556ce51ea01b13491d SHA-1: b8ad17b2b7056625408098e764fb964aee8af1e6 SHA-256: 4db60ad40139e0e5fc38b60af583cc0352f7eb4d6aa6d28b7333cf4c7c367b98
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 'ggtraff.ru'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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://ggtraff.ru/123?utm_term=how+to+fastboot+mode+micromax+q402 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4495860/normal_5fb67e1551008.pdfIn PDF document text
    • https://nolugebufumo.weebly.com/uploads/1/3/4/5/134597996/4395741.pdfIn PDF document text
    • https://mirotipobidonep.weebly.com/uploads/1/3/4/9/134902528/jupawijunuxupali.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/9f04404f-93cb-4665-a594-1bc3b8619ae5/pamajuxajopunokarife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2155ef2-57d4-4ec9-ab30-0fdaa66a499e/34532634732.pdfIn PDF document text
    • https://s3.amazonaws.com/tabagelufazafew/calories_in_breaded_fried_pork_chop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/272076c9-e4ab-4d86-9a03-0f184a1a29de/binuzoxelokozape.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/68746246834.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceb98df527e820f03c15a0/t/5fcfc52d28714b03f1ba502d/1607451949368/marktplaats_apple_tv_afstandsbediening.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a7bca90-c0f1-421d-9340-ac7cc08f95fb/83202585245.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/98218692421.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/lironuteviwubidul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce13e37d85b15ca79f7857/t/5fce7303ea287076b32aa4db/1607365384028/the_environs_survive_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae4a1ad-b420-48bb-a899-2f64a9046600/mabanesusexuzebasatodeba.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_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 5884 bytes
SHA-256: a049aae17333048d73ceb4cc1ea22436832cc612550eb1292087d5db1ff64572
font_01_sfnt_off0000e442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE442 10836 bytes
SHA-256: 546ec6c602a5408d198b49e1081e11984890ffb923b175cd2145f0d0a709b9b3

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