Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc353e7ca7eaa47…

MALICIOUS

PDF

81.5 KB Created: 2021-01-09 18:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 431e60343224c7dd229ceb7ec0545535 SHA-1: e48d390075d8f49ea51a486522ca257e11486de4 SHA-256: bbc353e7ca7eaa473e80ddaa151ebc3f0cbbb1207d1b1ff44952a6005dcc97aa
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL, 'https://traffmen.ru/aws?utm_term=jubilant+foodworks+ltd+annual+report+2018', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=jubilant+foodworks+ltd+annual+report+2018 In PDF document text
    • https://cdn.sqhk.co/dofewijoras/gdihegd/polygon_grand_battle_royale_free_fire_squad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481990/normal_5fabbe629d223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f996967ac347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486374/normal_5fd286200765d.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/KUupijy/bizanexiloberaw.pdfIn PDF document text
    • https://cdn.sqhk.co/zunesunatiri/cZhbOhi/kitepamasozibemunafuxabus.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/dutuzanob/swtor_eternity_vault_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/gimiposivebi.pdfIn PDF document text
    • https://s3.amazonaws.com/nepawigexa/tivamidilojetepalojixogez.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/online_video_er_addon_for_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86215eb5-6572-42d6-a52b-1ed7dc806f12/mepides.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/kettler_sport_kid_racer_pedal_car_parts.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_off0000f334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF334 5720 bytes
SHA-256: 24785597cd728afdc49e368aaa975c85b78a0e24faa9848e4a30b8966080dcde
font_01_sfnt_off000106cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CF 10748 bytes
SHA-256: c4764e62ba10e85907561b6b8421fca1e1ec1f690b9e67df160581549c62a369
font_02_sfnt_off00012acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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