Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7289fc3925a0954…

MALICIOUS

PDF

67.7 KB Created: 2020-12-31 17:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 24c34c97a1d1f51b29dc6bbd90ed59c7 SHA-1: ec66f7f6de9b087172b9d5e60564f20973b3db07 SHA-256: f7289fc3925a09540379f7edd14d50c078ad208c1a30623b7821d8da76984443
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://traffking.ru/123?utm_term=kylo+ren+cosplay+mask'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, consistent with phishing or 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://traffking.ru/123?utm_term=kylo+ren+cosplay+mask In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450145/normal_5fbf24a5ccb73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_5f8e19aab2d41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f8b81d18051e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450624/normal_5feb782de7d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371787/normal_5fccbddbdc66b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456121/normal_5fe741e5c2c0a.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/f2e04faa-b26d-4fa8-8c9d-9443454bafbc/42900631987.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/97667368266.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/employment_eligibility_verification_forms_of_id.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de07bc70-d4c9-4cd4-81f6-1a19dd97b3ed/apple_strudel_puff_pastry_recipe.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/95167948185.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/animoto_video_maker_pro_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e0fc26c-89a2-4525-9d9c-8f2b68d721aa/jodo_poveikis_strumai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1704299-a0cf-4a1e-8ea1-7c0371fe2a16/carl_zeiss_ag_annual_report_2018.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_off0000ccda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDA 5212 bytes
SHA-256: 6b44d5c04f4b00b1f41c2f47f403fa96effa1e84f821652cbb2305b08a9d194b
font_01_sfnt_off0000de8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8A 10864 bytes
SHA-256: 0011f4021e41c63a45b66d204bb60ac756439bb0420c09f38d03405a7cf1b9df

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