Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcce96608b5a2343…

MALICIOUS

PDF

70.6 KB Created: 2020-12-02 20:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a79bce8a62af85cf01ffa71cf44a6793 SHA-1: 96d63867e832aad42a7fc64322aa20a204b470c6 SHA-256: dcce96608b5a23434347a272dca25add61f9298df3cb31a1fb755c98aaa135d6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'shoot em up games pc'.

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://traffset.ru/aws?utm_term=shoot+em+up+games+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495838/normal_5fae07e2e67b7.pdfIn PDF document text
    • https://pasifoberili.weebly.com/uploads/1/3/4/8/134881239/kabasapelezelutofona.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_5fb37256c1e4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_5fa428fb4a3ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fc105b0c908a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_5fc1127b5f390.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475383/normal_5fc6c6e576488.pdfIn PDF document text
    • https://minizaderi.weebly.com/uploads/1/3/4/3/134344024/wavonufun_giseroralatagoj_dazilivad_merasazewedup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_5fb4ed353b15b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5fc56a627f29f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470843/normal_5fbbdd6cf2571.pdfIn PDF document text
    • https://wowumasoz.weebly.com/uploads/1/3/4/3/134310839/kafinifibesa-nanamivawutipod-zabulawa-jaxere.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/lomuper/pepagaxepekodowuxisetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d37cdc-13a8-45c0-9293-e51c8c4b5444/animal_jam_codes_diamonds_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00168ab9-57fd-4c8b-9aeb-764112f0c233/6_1_4_pulgadas_a_milimetros.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/the_stranger_albert_camus_matthew_ward.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_off0000d85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85E 5320 bytes
SHA-256: ee099ad4d95c4c37b02aea3e1045a3c9f560e4c635f743f7ef9adf2d8b80988d
font_01_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 10280 bytes
SHA-256: 57c1a61a3b4e35aca56e112ad7ad6521fd5c7e21d10dbb97891c5edd31ea76a1

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