Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5e5d8e23dafae4…

MALICIOUS

PDF

85.2 KB Created: 2020-12-21 01:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 685deed022e97338403bb39132b691dd SHA-1: 1d8ccc7023a8d9593353a78af5c351aac7707807 SHA-256: 2d5e5d8e23dafae485bdaa0c19e0ef0f2dd782d6625a3f226968dc47e397ff44
176 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection for a phishing trojan. The document contains a mass of external links, with one suspicious URL pointing to a potential phishing or scam site. The presence of a callback lure heuristic suggests the document may be designed to trick users into calling a fraudulent support number.

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/strik?utm_term=digital+marketing+degree+online+canada PDF link annotation
    • https://nitevafatuva.weebly.com/uploads/1/3/4/8/134872456/pekujejavoder-xedefati-mofixukunisetav.pdfIn PDF document text
    • https://rogusedi.weebly.com/uploads/1/3/4/4/134433103/5142211.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/5fcee2dce554aa354114ea99/t/5fd73119154d727871061aa8/1607938330629/gujusixediwekotibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a44128-f12e-48fc-9c6c-c4139c63a888/temel_yaam_destei.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/tiloxoganojojazetef.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/dogujinifuka.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/20252330836.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21e2fce462bc8c0024/t/5fc38aab3570fb44d170c26c/1606650540770/levivos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c9dead-1e3a-4535-ab76-6ae9a9eee8cb/24379692480.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/62673195803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720082d8-2c04-4871-81fb-9a9381e7804a/merlin_home_transmitter_ex1150_quick.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/komuwedezodegib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2c57848ba205d187778/t/5fc150f59ee0f32b8783c2aa/1606504694172/kezaratufufav.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/96972959568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e86f425-f244-4caa-a0b6-6d3221a4152a/cheat_codes_for_clicker_heroes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92bc593e-4c59-4e79-9ff4-33ca9064bea0/sentry_v252_safe_change_code.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_off00010e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E88 5144 bytes
SHA-256: 01004b319d2c6e3ef0e6c25d3302a92dc6f9bea08babf8dff59b9c0935700a48
font_01_sfnt_off00011ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF8 11716 bytes
SHA-256: 19c9f36639c211538f79fc9511876528beb2f8f370693d5309ac32a637a17168

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