Malicious PDF — malware analysis report

Static analysis result for SHA-256 40cc1035dc3572d9…

MALICIOUS

PDF

80.0 KB Created: 2021-03-12 04:01:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7520510da11682bf82c64d46df9f868 SHA-1: d3a50ecaf5aea1914f36852c698610e3b914fae9 SHA-256: 40cc1035dc3572d9ded42a44aa926bcd4a4ca23cc29642a79440ce992904e150
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL 'https://ponafet.ru/123?utm_term=alight+motion+apk+ios' strongly suggests a phishing or malware distribution attempt, masquerading as a software download. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/123?utm_term=alight+motion+apk+ios
    • http://pisodaseveporow.22web.org/how_do_i_check_on_my_medicare_part_b_application.pdf
    • https://cdn.sqhk.co/piravasufinu/d6ietjb/samurai_vs_zombies_defence_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4465564/normal_6047390663d39.pdf
    • http://teksalon.xyz/critical_success_factors_template_wordau1ci.pdf
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fddb5f828d67.pdf
    • https://cdn-cms.f-static.net/uploads/4483104/normal_6048cb4d1b649.pdf
    • http://app-3null.com/fsrm_folder_size_reporta89gt.pdf
    • https://cdn-cms.f-static.net/uploads/4366335/normal_600f8efc5ffa0.pdf
    • https://static.s123-cdn-static.com/uploads/4489593/normal_5ff0c241914ca.pdf
    • https://static.s123-cdn-static.com/uploads/4382784/normal_5fc87acc910d8.pdf
    • http://dream-stat.ru/zavelumfqx9o.pdf
    • http://nesobaka3.xyz/xogetigotiwafapiponj5wm0.pdf
    • https://cdn-cms.f-static.net/uploads/4413113/normal_6034ddc67949b.pdf
    • https://cdn-cms.f-static.net/uploads/4414153/normal_60254993638a3.pdf
    • http://opros.xyz/autel_code_reader_updatev1ple.pdf
    • https://cdn.sqhk.co/japanakoga/fgeezhy/jilawojexarazugi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ruzaganog/sunbeam_premium_quilted_heated_mattress_pad_king_size.pdf
    • https://s3.amazonaws.com/tokit/2008_audi_r8_performance_specs.pdf
    • http://werufofewusil.epizy.com/bible_online_free.pdf
    • http://ramejepazino.rf.gd/lugenuwigujusaw.pdf
    • http://xisapedugifado.epizy.com/runotoguz.pdf
    • https://s3.amazonaws.com/vunizi/399513694.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb8b.bin
5a698f3afdb72c3f07647da9d5b4d622b1287c950f57cc888017d1ede28fc8eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8B 5192 bytes
font_01_sfnt_off00010d10.bin
d55d8f82383a5694dd198fe4ae2c699489afa29fa182eafa992061a59cc9ad11
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D10 11108 bytes