Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d320d25685fce7…

MALICIOUS

PDF

62.8 KB Created: 2020-11-23 15:14:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 92213efd693c91d4768b07c6377f9ba9 SHA-1: dbc70ffc3491096517ee7abae7434c4b0e02ab06 SHA-256: 48d320d25685fce748775096c6356c6603b13e7c559c54371b444beb89153e5a
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a lure for software cracks. The presence of embedded URLs and the critical heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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/strik?utm_term=crack+sony+vegas+pro+10.0+keygen In PDF document text
    • https://pafirolexorawu.weebly.com/uploads/1/3/4/6/134612045/6384597.pdfIn PDF document text
    • https://vutisoneve.weebly.com/uploads/1/3/4/4/134470706/dozilebuduju.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/9261375.pdfIn PDF document text
    • https://vaxuziboz.weebly.com/uploads/1/3/4/6/134695811/3960426.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/fejenijovekozu/siwejeritaxaxumanisifafex.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/sozamibafapenupamokemasux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5038f1a3-94bb-44c2-b978-ee88c090b3d0/77677502227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0bddb3-530d-4e4b-8f48-7b2894f83152/27336769501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/862cb147-3bab-4506-bfa7-69666e3d8b98/pesigenori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/661372fc-ddb3-4993-94ae-4df3f1d81405/2013_amc_10a.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/80307342654.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_off0000b64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB64C 5424 bytes
SHA-256: 7dda83940df10765ae85894a2d317b15d520aed9a9d265c2cc3dee87ee7b9845
font_01_sfnt_off0000c8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EC 11348 bytes
SHA-256: cc66ff77e79a20f14fd8f1287458301be9b8a069b233497cddf7ec1af0889222

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