Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b18ed9b0220e38…

MALICIOUS

PDF

72.2 KB Created: 2021-04-08 03:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a32928dd2935c4352b2d5a5b530821b SHA-1: ced8141b31121b58205c8d647c07a244007c296d SHA-256: b7b18ed9b0220e38c2da477584557465b916b24c19e260f08264165dd438e755
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure suggest an attempt to trick the user into navigating to a compromised site.

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://jacksth.ru/wix?keyword=everstar+mpm2-10cr-bb6+window+kit
    • http://gapijet.scienceontheweb.net/fufurukuwapimobitokoful.pdf
    • http://gmetry.online/fizijabuxugigwelzx.pdf
    • https://cdn-cms.f-static.net/uploads/4369150/normal_605ace87a1b9d.pdf
    • http://poverkavoda.website/jovirupc4cq.pdf
    • http://naturebiolog.space/51075424716zmdm0.pdf
    • http://xexejevun.medianewsonline.com/hindware_sanitary_fittings_catalogue.pdf
    • http://hangzhoumetal.ru/jokekugowokizawunewen5ke68.pdf
    • http://sakulog.sportsontheweb.net/what_is_a_good_score_on_the_hesi_a2_exam.pdf
    • http://baby-slings.ru/fowovutulowozizikogawul1dz8.pdf
    • http://dreabling.online/88373836238k3bcu.pdf
    • https://static.s123-cdn-static.com/uploads/4448550/normal_5fd04dc00b863.pdf
    • https://static.s123-cdn-static.com/uploads/4484114/normal_5fde37d55c638.pdf
    • http://koteyarn.moscow/football_manager_touch_2018_mod_apkl5upe.pdf
    • https://cdn-cms.f-static.net/uploads/4411944/normal_601a418924314.pdf
    • http://xxlmature.site/rizofotofonuloxefuwivjs01g.pdf
    • http://thrivewebs.com/tekivisugeptx3gj.pdf
    • https://cdn-cms.f-static.net/uploads/4419626/normal_604624d0bf79f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://polodosoxej.rf.gd/9162017891.pdf
    • http://kafotafuvodalix.onlinewebshop.net/the_sandman_tv_show_2020.pdf
    • http://duverakonu.rf.gd/51806810058.pdf
    • http://josuxak.atwebpages.com/90440227317.pdf
    • http://ximitexus.epizy.com/2019_bmw_x3_m40i_manual.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_off0000dbb5.bin
af9fa15ad8027ae49bc02d8097fe9a5d93e4a17aa95bfb3a2afdbcc931bcf98c
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB5 6012 bytes
font_01_sfnt_off0000f032.bin
e7f5c0c4f727acaf7fa6b932d6b786a4b5b4e85b868346028001ba038c19f147
pdf-font-stream PDF embedded font (sfnt) at offset 0xF032 10336 bytes