Malicious PDF — malware analysis report

Static analysis result for SHA-256 88859869bc2519b0…

MALICIOUS

PDF

71.9 KB Created: 2021-03-29 05:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6398eb53b22982157d5cb257e73bcb4b SHA-1: 947bf34440a24588e5e8e55614e1c40b6ac7144f SHA-256: 88859869bc2519b02ed9eda7ee9811b34312286cace5c7fe7a3260c0262aa6ba
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains numerous embedded URLs, with at least one pointing to a disposable hosting service and another to a domain associated with malicious activity. The presence of these links suggests the primary goal is to redirect users to external sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/wix?keyword=badlands+12000+winch+mounting+plate PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379049/normal_5ff98846a605b.pdfIn PDF document text
    • http://nuxidokugaleme.iblogger.org/32841368152.pdfIn PDF document text
    • http://larijasetejupaz.mypressonline.com/zuzekulotunul.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/high_fodmap_foods_to_avoid.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/hoveround_mpv5_battery_charger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383561/normal_5fdb7fd3c6ca3.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxezitowefi/gdhbcEr/fobegotun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451575/normal_5fc87facd399f.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/r2ibeOY/1776766366.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/ihjaiiU/sasuguputago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481520/normal_603bf68a90408.pdfIn PDF document text
    • https://cdn.sqhk.co/sogozoxu/igOjauW/vodilosojet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427080/normal_6026aa112a53a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_be62b2ab89744a24bc9841b9cbdafaba.pdf?index=trueIn PDF document text
    • https://dd67658a-cc17-4e1c-bca5-42bf299a485b.filesusr.com/ugd/07a440_37f59320f57544679c095fddb2a5abad.pdf?index=trueIn PDF document text
    • http://susabumo.atwebpages.com/5678938501.pdfIn PDF document text
    • http://loxosufodu.epizy.com/bnha_villain_oc_template.pdfIn PDF document text
    • http://woxikajir.myartsonline.com/81875258203.pdfIn PDF document text
    • http://tasukifuputuf.epizy.com/el_capitalismo_libro.pdfIn PDF document text
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_1638b8f5114e41e99166bc7e8c3b8629.pdf?index=trueIn PDF document text
    • http://lepevalir.rf.gd/genagexi.pdfIn PDF document text
    • http://lozepis.epizy.com/sadadepu.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_off0000d99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99E 5856 bytes
SHA-256: c735271163163a378352a35ebfc8eb75c38d5d87a8c05bca9d165571efc24632
font_01_sfnt_off0000ed8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8B 10804 bytes
SHA-256: eaddc68fe941af99f3238c827b285927da220158f6e89ee3ea42a992be9accb9

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