Malicious PDF — malware analysis report

Static analysis result for SHA-256 6035f46b17e526f2…

MALICIOUS

PDF

81.1 KB Created: 2020-11-11 16:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 3282b42e095c7e2b82d6aad6d8d541e6 SHA-1: d8f14b18a3ee3d833218735f8c40f63bbc52b733 SHA-256: 6035f46b17e526f2b9b1a4d1f0ec4a6891abcc794b9a8e8f46df5b9c47e180c4
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 a malicious redirector link and a high-confidence ML classification. The embedded URL points to 'traffking.ru', which is known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an intent to lure the user to a harmful site, likely for phishing or further malware delivery.

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/123?utm_term=b%25C3%25A1nh+b%25E1%25BB%2599t+l%25E1%25BB%258Dc+g%25C3%25B3i+l%25C3%25A1+chu%25E1%25BB%2591i In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5f9b23be0bc10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_5f9ce098e90ff.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/04cf644c-facb-47f0-b7eb-c6171773b96b/78574386255.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/bojevokobagesugifadawil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d066703-90b8-44ea-84ae-950483850162/14060663128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8e657b1-cc18-4f34-92e1-ba316169a611/15305699503.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/define_medium_in_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9c97a7-9d95-4999-9c90-66f41103b21b/persepolis_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/lirivugu/rixitivotowok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f6da18-d37e-4508-941d-eacf08c513ce/mr_ed_theme_song_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/96988343846.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/cassava_production_in_the_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/read_naturally_answer_key.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00010ec6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10EC6 22844 bytes
SHA-256: a2f3d7841a1037fa06b1a39a0377949c2b41008482d3ed77c8a52d1d0e44592b
font_00_sfnt_off0000ce03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE03 5584 bytes
SHA-256: 8eac74f51bba1dbe0a24602bfa09e6088d974a5d8cfbae2653a9ece649555cd4
font_01_sfnt_off0000dfe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE9 21648 bytes
SHA-256: 77aa4f2057529997c09457afe03f96169ecd95c462de232b1623b4dbb38db03c

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