Malicious PDF — malware analysis report

Static analysis result for SHA-256 02019f8d76527a5b…

MALICIOUS

PDF

67.8 KB Created: 2020-12-18 13:59:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b5c7c3b98816acca3b11de8e14f23c64 SHA-1: 0e89dd2f316cf8a1aefb85af872010115f73a0e2 SHA-256: 02019f8d76527a5bca75ce3601e68fd83a7bc4dcfd2b417b1875568d3e756cf6
222 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 'gettraff.ru', disguised with a movie download lure. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to benign S3 buckets but some to unknown domains. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or malware distribution document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bazaar+kannada+full+movie++movierulz In PDF document text
    • https://besuxape.weebly.com/uploads/1/3/4/3/134374749/27fc4cf15.pdfIn PDF document text
    • https://xefafarorul.weebly.com/uploads/1/3/4/6/134698093/mamilut.pdfIn PDF document text
    • https://sajesugepila.weebly.com/uploads/1/3/4/4/134467456/7933373.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/sbi_general_insurance_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/juxerutesixas.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/kadoputijajexosixofin.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/charlotte_nc_downtown_restaurant_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/loduxusibivegabanuv.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/beauty_plus_camera_hd_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/86943308060.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/68039927970.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce2f7b08bb286b7fcda3d5/t/5fd6215adca221526039e6a6/1607868762205/analysis_the_gettysburg_address_worksheet_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0daf6457125654018491/1606290863194/grossmont_college_canvas_support.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_off0000caf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF3 5096 bytes
SHA-256: fab700c39b384a3b1349fc59343350383bd8a998b97b4f201c190a66719d9252
font_01_sfnt_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 11056 bytes
SHA-256: 3d98de7eb4001f0b2929a0bf75d583989f3845a3b5c0999c467948b2d7d10f92

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