Malicious PDF — malware analysis report

Static analysis result for SHA-256 147f7073f2efcbcd…

MALICIOUS

PDF

67.2 KB Created: 2020-11-11 02:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: dfd48fc2abd15e941c80f8d9bbf5da6e SHA-1: 7a3423e86434faa9e4caa47556ba86e496f5d435 SHA-256: 147f7073f2efcbcde6fef1ffe2d6a7a647b425d8df5e408a8c7b2a706bbfd283
244 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to multiple external websites, one of which is identified as a malicious redirector. The document's content, though heavily obfuscated, appears to be a lure related to a video game, aiming to trick users into clicking on the malicious links. The presence of numerous links and the identified malicious redirector strongly suggest a phishing or scamming attempt.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?keyword=money+glitch+2019+gta+v+online+xbox+one In PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5f8b94b674fcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_5f9fb82e7b77d.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/1958350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f9b44e9deb28.pdfIn PDF document text
    • https://dibodowe.weebly.com/uploads/1/3/4/6/134686502/norugekam.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/gisilolozelid_wurerowipapawiw_kowudakexifazi_fepegekob.pdfIn PDF document text
    • https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/d912f3dfe1aea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_5fa7330d82424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446019/normal_5faadf7230b29.pdfIn PDF document text
    • https://zirasave.weebly.com/uploads/1/3/4/0/134096010/43a9d74c.pdfIn PDF document text
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/nabokesavo.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/cb07ca07-d649-4220-9e03-098ee0eaeb85/sisobes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bebbfc7-992c-4f0f-88e2-300b0b0060ea/64071425677.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_off0000ca84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA84 5644 bytes
SHA-256: fe536ccee19cf750ec1c093e5f875ccb2505973269c1b6644268e880ab22edda
font_01_sfnt_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 9940 bytes
SHA-256: 6ced1eb5794214b881928dcac891eca667738cb34118f12d728609e8d9ee4e49

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