Malicious PDF — malware analysis report

Static analysis result for SHA-256 5326252cc086004f…

MALICIOUS

PDF

112.9 KB Created: 2021-03-01 02:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 47f74872caf6c4867a2b0582bb3faf95 SHA-1: 87ec2aa8398d09354200594c67d374e7e79474c7 SHA-256: 5326252cc086004fdbd7f75584d354f1e1846112537b7b9382be678afadac0f0
126 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that points to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or credential harvesting. No scripts were extracted, but the presence of numerous external links and the overall structure suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/award?keyword=how+to+reset+zte+pocket+wifi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383322/normal_6001807d3e39c.pdfIn PDF document text
    • http://im-marceting.site/koel_bird_sound_ringtone_freesg7bo.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/spanish_civil_war_1936f8748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387813/normal_601ffd27a7caf.pdfIn PDF document text
    • http://bestplacefor.rest/8977159298485w1i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464072/normal_5febf5d461a7c.pdfIn PDF document text
    • http://pafiwuz.66ghz.com/xixipizowuwizazigu.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/what_are_the_different_roles_in_scrum_process.pdfIn PDF document text
    • http://reduslimer.website/pikekoberizororusibizaxav90qp.pdfIn PDF document text
    • http://venupalu.iblogger.org/implicit_instantiation_of_undefined_template.pdfIn PDF document text
    • http://leftoutclub.com/bejesese6rtv3.pdfIn PDF document text
    • http://lotto-investclub.com/fakewokug8yh09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393514/normal_5fd8b5ba6f5ea.pdfIn PDF document text
    • http://xteenware.online/meboropelogudwxe7f.pdfIn PDF document text
    • http://idealica-co.site/bopoduzidamuz9d18w.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/how_to_stop_your_dyson_smelling.pdfIn PDF document text
    • http://help-violation.com/nepoditododutujeecjod.pdfIn PDF document text
    • http://istra-backwater.ru/20460134367ikh4r.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/maus_art_spiegelman.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/xakaxafapi.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
    • http://sajavisazoz.epizy.com/naruto_databook_1_download.pdfIn PDF document text
    • http://rukodulaban.epizy.com/holding_hands_hd_pic.pdfIn PDF document text
    • http://wizuzipureja.epizy.com/lease_agreement_template_uk.pdfIn PDF document text
    • http://paxajuleki.rf.gd/how_to_open_yamaha_remote_control.pdfIn PDF document text
    • http://wujewepal.epizy.com/9531277462.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000172f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x172F1 4616 bytes
SHA-256: 99a034856d4230f28bfb566e1307fa40a1defc99f25b606bbae9a09dc39d40f3
font_01_sfnt_off000182d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182D2 10640 bytes
SHA-256: f9a8fd86c2df602c7102e7bdbcfea77a5a7985ff9ea8cdfcb2b3038320d761a9
font_02_sfnt_off0001a703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A703 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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