Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb872dcfd616bd9…

MALICIOUS

PDF

74.3 KB Created: 2020-11-13 23:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4ce8d67e3d1cb8375e5d816e21c45c9c SHA-1: ddfd9aed30524f9db195701d8edcb47bcefc8145 SHA-256: ebb872dcfd616bd9c7d533b18ad53c4c91dbd7bdc9bad848cc08adc72d117675
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=bloodsail+buccaneers+rep+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5f8cf9a2e19b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_5f9ceadf2f218.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/wusigipufuvowix/nulebimagosilezuwunajug.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/rubudafawud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b3adad-5a73-44f8-bfa9-f1afdbe93759/zebadutovasupugixepoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/there_was_or_there_were_a_few.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/bawubapekegeparofifuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b9b7b2-83ce-4695-a494-09cc4bb04d9c/77316685876.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/rabbi_tovia_singer_website.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/agriculture_intensive_et_extensive.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_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 5428 bytes
SHA-256: a5d5031fcc8520fb2d07dae6601788243b425a40bbc448b3e1f0db46145f37d3
font_01_sfnt_off0000f8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F4 10472 bytes
SHA-256: 5d8b1d58df146e5dc5418b4f9052d210c87cc12ced4d6815d31760b78f37d107

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