Malicious PDF — malware analysis report

Static analysis result for SHA-256 9027dda95418ad9c…

MALICIOUS

PDF

78.9 KB Created: 2021-01-06 04:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 704b4a3d88249954b8e4ad7ca17c2d28 SHA-1: e4d4ad112b7a4024669a04a78567b0f6bdda5d09 SHA-256: 9027dda95418ad9c0440b6ef732b81d2794166b5ec076ee4f488410217bd7e2a
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/aws?utm_term=lamborghini+full+song++the+doorbeen', is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL suggest a phishing or redirection attack, likely delivered as a spearphishing attachment.

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://gettraff.ru/aws?utm_term=lamborghini+full+song++the+doorbeen In PDF document text
    • https://static.s123-cdn-static.com/uploads/4470836/normal_5fc752a5ba0fc.pdfIn PDF document text
    • https://cdn.sqhk.co/zivunegas/ftibLlG/wii_u_emulator_ios_13.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/gqcXiaU/thrift_stores_in_princeton_nj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452609/normal_5fa65f3e6b3cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5f90860918f01.pdfIn PDF document text
    • https://cdn.sqhk.co/ponesigis/hcif3he/my_story_choose_your_own_path_unlimited_diamonds.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/dWiaeUh/penguin_goes_back_to_rescuer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_5fd95aa81f8e0.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://uploads.strikinglycdn.com/files/b788e995-b0ea-4785-83c8-850c40677f6d/kim_sang_kyo_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ad3f72-f3de-44e5-8179-3c731a2def67/pisilowug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a25e9cf-455f-4df4-b857-2f5df4f98564/rocket_surgery_made_easy_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/28249379929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc0b290b-1adb-4c0b-beab-0243452a08d0/girl_bicycle_16.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ded4de-d00d-47c8-b59c-2a5ee420c971/blank_nyc_leather_jacket_black.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_off0000e8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E5 5284 bytes
SHA-256: e742ac5b89735180e8ae71802288ad8dffb6041499b2f6e2e792d4f055413145
font_01_sfnt_off0000fab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB2 11348 bytes
SHA-256: 4b5d33772d66ce68ba6f2d7b6131168faaeff2cbfe6fa32037575cfbda5e4b91
font_02_sfnt_off000120c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120C0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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