Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcedaa7841926db7…

MALICIOUS

PDF

64.3 KB Created: 2020-12-17 22:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5d5103eb450ba34c4d256e5b3e4d8958 SHA-1: 7136f67bbe3ad7cdb834ef5b01f92b77b38de6e3 SHA-256: bcedaa7841926db75fc2778ed61ef65094f1de45434c64e87145e1b6ff427884
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a URL pointing to 'traffking.ru' suggests a phishing or malware distribution campaign, likely initiated via spearphishing.

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://traffking.ru/aws?utm_term=free+booklet+template+word In PDF document text
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/56fb15aa0d26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392191/normal_5fc711256064f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_5fc1488b00784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414691/normal_5fa3874c49e6b.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/745d6073-b043-49ed-bd8d-9385813ce772/fufinagifeder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd03e605-3c94-4ca5-ac3b-3f1f91d1dfe4/zooka_speaker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46439d9b-69b3-46ad-895b-35e7b324504e/6_1.5_v_battery.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4dcaf8cdb769c6d9284a/1606372811847/89691666156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6958b384-d74a-4e77-a18a-523b22270ba0/katawa_shoujo_story_tree.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ec955687f52b6b8145c1/t/5fc6df31e2dcb1274dde3442/1606868786764/parallel_account_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac898d89-0495-43bf-96b3-57b82921e357/jolusutikojuli.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_off0000c2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2ED 5176 bytes
SHA-256: c0f99a1c1df60904f73c7e2e0f2bed211955d87d96d8aa3e03cc82833f5a4bb9
font_01_sfnt_off0000d481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD481 9500 bytes
SHA-256: 5f2dcb1b93a5d93665d67084e8c563bb378f54410f938cd1123234ad7cb4d78a

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