Malicious PDF — malware analysis report

Static analysis result for SHA-256 968fd5763ceedc02…

MALICIOUS

PDF

68.9 KB Created: 2020-11-20 13:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7c8421c2db24b3fb68109b120def8894 SHA-1: 92b2b56c393b804c4f312eb50fc84eaaf2f4c09a SHA-256: 968fd5763ceedc02038679d75485db63ada5e6cc6e956c4b79bc8b1611922caa
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffking.ru/123?utm_term=hawaiian+beef+stew+susan PDF link annotation
    • https://monotolifevi.weebly.com/uploads/1/3/4/6/134683372/birodiboka_jekulajesuratu.pdfIn PDF document text
    • https://kakejomoweva.weebly.com/uploads/1/3/4/6/134674311/xesezuvazojelememugo.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/16a09cdf-fe78-4b9a-aa71-077e386e2004/atomic_structure_review_sheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e50ebc-2d27-48f2-b7b6-2dcfe3cc226e/xagurezilixuzikifuzusig.pdfIn PDF document text
    • https://s3.amazonaws.com/nepawigexa/jorawiroxipapusamisub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81690be6-05e1-468d-b078-cd8d3fd1149a/76569318343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed6e3501-4c7a-4e08-b963-325892aa55ec/55039706801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/819bed0c-3b03-483e-897a-28b13029e2a6/guide_series_meat_grinder_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d4f2023-c003-4e9e-98c9-9daf5c720c24/ls_180_derece_olan_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ed88ebe-f753-47a3-9415-59637a114a53/85112965142.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/pandigital_scanner_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/smith_mountain_lake_map.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_off0000d083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD083 4824 bytes
SHA-256: 35573af946da17ef192e980fc638e6185c6620e3f8c150ead3e411adecc43551
font_01_sfnt_off0000e116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 11224 bytes
SHA-256: 2fda5cd3c736039da10bb25e0744e95be2c2c99f6134ec50146038e7370c7cf5

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