Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b183cc34abcd5ec…

MALICIOUS

PDF

74.5 KB Created: 2021-01-17 12:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: c498666ed673772ba47b6a21be1abada SHA-1: f5c17705b1a1408c76414b8145778361e2ab0ab5 SHA-256: 7b183cc34abcd5ec561084c48fb90a75f8352fa116a8f1ab73ca24272406e7d8
224 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a fake CAPTCHA lure designed to trick users into interacting with a link. The embedded link, https://traffking.ru/aws?utm_term=automation+anywhere+control+room+user+guide, points to known malicious redirector infrastructure. No scripts were extracted, but the PDF structure and embedded links indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.
  • 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://traffking.ru/aws?utm_term=automation+anywhere+control+room+user+guide In PDF document text
    • https://site-1168253.mozfiles.com/files/1168253/aguner_poroshmoni_karaoke_track_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/agiheTB/shipwreck_museum_whitefish_point_michigan.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/6ibS9vT/pyramid_run_2.pdfIn PDF document text
    • https://jefaganogebe.weebly.com/uploads/1/3/1/4/131437435/da53f39f659.pdfIn PDF document text
    • https://site-1178729.mozfiles.com/files/1178729/hidden_valley_road_colorado_springs_map.pdfIn PDF document text
    • https://site-1178383.mozfiles.com/files/1178383/62891404016.pdfIn PDF document text
    • https://site-1223236.mozfiles.com/files/1223236/citra_canary_build.pdfIn PDF document text
    • https://site-1238363.mozfiles.com/files/1238363/fishing_guides_baffin_bay.pdfIn PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/667c516.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/kufuzijatikuxezigofi.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://getetir.epizy.com/feduxavabokafuvuvi.pdfIn PDF document text
    • http://fepadegan.epizy.com/cabbage_nutritional_information.pdfIn PDF document text
    • http://jegowijuvu.epizy.com/respiracion_anaerobia_y_aerobia.pdfIn PDF document text
    • http://rumapipenuwiwo.rf.gd/30637537710.pdfIn PDF document text
    • http://kenugaderagof.epizy.com/arsne_lupin_gentleman_cambrioleur_maurice_leblanc.pdfIn PDF document text
    • http://vuxubeso.rf.gd/zazafogebilezi.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_off0000d685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD685 5420 bytes
SHA-256: 295e605edc6563b8f410392bdf90051a38d051fc3d8cf477393c451c6160a2af
font_01_sfnt_off0000e8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CF 10516 bytes
SHA-256: 4fe98c1a5718e9e39399bef55d3b51f6bfc77b9b8b2ff66e278ee12c546d5f47
font_02_sfnt_off00010ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA1 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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