Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad696d385137dd27…

MALICIOUS

PDF

66.1 KB Created: 2020-12-26 13:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: df0e7e07522f6f60d834803b5d3a6757 SHA-1: 50e151cc5ef5e31314304434910421625c25715d SHA-256: ad696d385137dd277fbcb95c627d02c34d3db7e6674d5973742de6c3096c4103
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a "Pdf.Phishing.Trojan". It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=logo+circle+png+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443801/normal_5fda45235e7c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_5fa907be9ab61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f968be25eb01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_5fa812f7ad6ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5f9f003e0920e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_5fb36c23a9d9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419644/normal_5f9fe59818682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422879/normal_5fa1b344546db.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/6ce90005-06e8-4b90-8482-71fedc0f191e/a_wind_in_the_door_ebook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d88c09ae-4124-4a1d-a28f-935fd08029a0/class_websites_for_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19e3123-babf-4025-adc7-d2404c7763c8/50831367048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ddd832-37e7-406a-828e-26200865d0e8/37885359260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df739cc-a178-4817-9d52-1e1d2659b16d/xopug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ccc92f-10fe-484d-b533-b3ddac3c8986/shark_eating_whale_hawaii.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC821 4736 bytes
SHA-256: 5781eca0a7e0dc9b5c555260be3325ce4c2c2f1ff9b292b424fd3b5ab4647e6c
font_01_sfnt_off0000d85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85B 10784 bytes
SHA-256: ddc25c92cabcad68f8d0133618e7a8f88eaec133f86c5cc59e73ca0e0518332a

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