Malicious PDF — malware analysis report

Static analysis result for SHA-256 0575e09034518a71…

MALICIOUS

PDF

66.3 KB Created: 2020-12-14 18:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9054de0b4305871dad1bdc2c0fc5661a SHA-1: b7b7cf165375012143247499b7e15aa7a1e4e85a SHA-256: 0575e09034518a713e51d38ad551b7f1374c746aa880af60338a0f7155acbafa
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'traffine.ru'. This, combined with a high ML classifier score and ClamAV detection, strongly suggests malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to the 'wkhtmltopdf' tool, which could be used to generate malicious PDFs.

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://traffine.ru/123?utm_term=pittsburgh+magic+volleyball+club In PDF document text
    • https://pigakuri.weebly.com/uploads/1/3/4/6/134684466/pakebiwididimuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4d8138ef7301f8b2a384c/t/5fcb9f59b495bd202824e909/1607180121514/76134259571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99272f96-2fca-4441-9f25-ae2962d5b3d5/febadalanukur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd3eef3361272aec423d/1606221120537/tc_helicon_voicelive_touch_2_manual_french.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbc7c6d964583621a279/t/5fc17ffd1972c46e3cd7ac60/1606516734473/lideriwu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3799d60f2895dc1f82192/t/5fc7a116c953717e09df10e2/1606918422661/zebupogimovofoxarexibiwam.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/descriptive_and_inferential_statistics_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59462c6229360ecccb6a5/t/5fcc15332fa8bc6bcdd76dfa/1607210291431/parent_connect_cusd.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7aee6504bb4653ce6e043/t/5fd5fc78313c42342b822c64/1607859321161/beau_soir_debussy_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/bluestacks_offline_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/jazexowiwodezatepuru.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/lonixotaxuvogajowuli.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_off0000c651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC651 5516 bytes
SHA-256: d0b6da3b243e16885eaf3eed9d1c03ccb3df35ac96b19731f205cd7445de7fa6
font_01_sfnt_off0000d8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F4 9896 bytes
SHA-256: 996fe399542671c513804794c0e7e88c79aeb8af27237fa88ac6671fd97101d3

Open this report in the interactive analyzer, or submit your own file for analysis.