Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0561e675e693f7…

MALICIOUS

PDF

83.1 KB Created: 2021-03-03 01:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 638279216031ab521be3cce1ffc40a7a SHA-1: dd29b8be1cb568783877edfa8587a01a5d98d74e SHA-256: cc0561e675e693f78a36040e017155494bf303c1a96cb112f836c5efebb21ce6
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 0.9998

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://maypoin.ru/wix?keyword=99+hunter+guide+osrs+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445130/normal_6035060bb3c2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409118/normal_600471541028f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374542/normal_5ff8fbcfa2e2c.pdfIn PDF document text
    • http://insurancecarusa.com/what_is_chemotherapy_side_effectsf9r8i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461525/normal_5fca3a3e466ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464302/normal_602e323f2deb3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodipovoz.epizy.com/are_virtual_private_servers_worth_it.pdfIn PDF document text
    • http://gagisejokunego.rf.gd/33827686977.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/xerajaki.pdfIn PDF document text
    • http://xovujizimubuki.epizy.com/picsart_photo_studio_apk_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/c_o_form_e_acfta.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_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 5232 bytes
SHA-256: 5ff8e1121a0df1e2273a44eb67a8f566a6776d061986ab9cb351ca6c780d84a0
font_01_sfnt_off00011b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B79 10636 bytes
SHA-256: d1b8634c834144f93082d2663c5071894461941e0e0040d9db4b123d2a58299a

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