Malicious PDF — malware analysis report

Static analysis result for SHA-256 35682b3288b9a2c7…

MALICIOUS

PDF

70.1 KB Created: 2020-12-21 01:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e9b66e6e31f1e417466e70807518d151 SHA-1: e47768a42893140573dbb48663657d73d4481b4c SHA-256: 35682b3288b9a2c74943b0b1309b1b8bc26660d254e16f48dcf04f3e26d27b3b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that masquerades as a chess board setup diagram, likely intended to trick the user into visiting a malicious site. No scripts were extracted, but the presence of external URIs and the phishing detection suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=chess+board+setup+diagram PDF link annotation
    • https://serawododi.weebly.com/uploads/1/3/4/8/134885696/ruxivajapumar.pdfIn PDF document text
    • https://gukenesiwedik.weebly.com/uploads/1/3/4/7/134735424/5b942e910db78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_5fda682f3c241.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485173/normal_5fced1d51b2a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4b61a2ca-ded5-49f4-8b5f-9d07b854f586/juvidusetoguduwatefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8027fb64-7aaf-4904-a9d3-5b8680cee14a/common_and_proper_nouns_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14a13a1d-957c-4229-bcbf-586a3dd6f038/38710474620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8664c7f3-e15a-4681-b631-e6b2fb1398d4/french_angel_coin_jewelry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2d42c2e-3d5e-414c-9b32-588766a50a48/motetir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c312727-d4be-43c8-bc92-d5cc27f2ca99/tosutanufamufafazor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1045402e-f12a-4e70-b681-e91af7bc6929/insectonator_zombie_mode_achievements.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65F 5280 bytes
SHA-256: ec23f81aad538529cc81710bc85ad03952d318cd9d12f9685a344600c4964d74
font_01_sfnt_off0000d84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84C 11072 bytes
SHA-256: 2722b240ce1aa45354ec2b1716899ed85489ce003b54655d87294e8440e3bd16
font_02_sfnt_off0000fe0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.