Malicious PDF — malware analysis report

Static analysis result for SHA-256 b732c9709893657f…

MALICIOUS

PDF

71.0 KB Created: 2020-12-22 21:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6455aba226289d7865718fb14d901fe8 SHA-1: 278f577f8d4008c9e104bd41e83c955796be4744 SHA-256: b732c9709893657ffa0cd1bd4a42378697e4a87216a7ac6b5818c5db50048c0f
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'. ML classification and ClamAV also flagged the file as malicious. The embedded URL is likely intended to lure the user to a malicious site, consistent with phishing or malware delivery. No scripts were extracted, but the primary threat is the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/aws?utm_term=civitavecchia+map+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385887/normal_5fdbd5212d53b.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/rumurikokar-zejebow-pomudopi.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/kovozenamofox/18755271855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c107efab-3b5b-432c-b8b4-c1886e07439f/xapem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18b4cdf132613bbc250a7/t/5fcb5c361df7590d80de65d7/1607162934510/98334616468.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d73311f6a419849eeda5/t/5fc7562009f4d56e8f835c09/1606899233305/classic_train_simulator_britain_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d98c5e-0657-4ba4-b829-e3bc22f864cb/what_is_the_central_idea_of_malala_speech.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4a28139af037644e7e6/t/5fca3aaf2e4d7f67ca357d4d/1607088818261/best_cake_icing_smoother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b8f12b4-47f8-4a21-869a-16d04d0b44bb/vodidimese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349423ad-2f26-4afc-ad8a-0b90af723df7/almanca_ders_kitab_9_snf_cevaplar.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_off0000cd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD90 4744 bytes
SHA-256: 164fcb71233660a29f7dbbbc6d21aa803f47c1e67db08b88a6ddd92aba687deb
font_01_sfnt_off0000ddc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC8 10488 bytes
SHA-256: 4976e1634105ac0aaf249938a166e2c714f26f6d08bb67e372a024ae85ca70ea
font_02_sfnt_off00010143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10143 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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