Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c652b67b0d62a9…

MALICIOUS

PDF

84.5 KB Created: 2021-03-26 09:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f046c28f706bdc5588a1c60a6e893c00 SHA-1: b79832f623e8a1a6bc127337a40f0b5c8297a430 SHA-256: 10c652b67b0d62a9a2552e400e75f5c30014a7cbc9704b962630b44da35e61e9
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are hosted on disposable domains or link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to game commands and application names, likely serving as a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=crusader+kings+2+console+commands+win+war PDF link annotation
    • https://cdn.sqhk.co/romilononove/jbjcjbZ/dilujatuzezupupolo.pdfIn PDF document text
    • http://kefets.xyz/82016634166l16wk.pdfIn PDF document text
    • http://datavefa.iblogger.org/lomozotelazutaxom.pdfIn PDF document text
    • https://gugajapu.weebly.com/uploads/1/3/5/3/135330564/xametezag-panepuzirakaxi-nonujuvupif-gagezali.pdfIn PDF document text
    • http://titanovyi-filtr.ru/2006_toyota_sienna_oil_filter_part_numbera5ht6.pdfIn PDF document text
    • http://talakam.space/191417709876e3g5.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/ddjajbi/general_grievous_cosplay_video.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/dOhjQhb/35374321302.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/rixobevonividibewa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5ffb89fa01395.pdfIn PDF document text
    • http://a1metromovers.com/59764259757k3dsm.pdfIn PDF document text
    • https://riwusivi.weebly.com/uploads/1/3/4/9/134900433/gofizekerexo.pdfIn PDF document text
    • https://cdn.sqhk.co/lowixadoges/b7hfOhj/corporate_strategy_salary_philippines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_60362adf400a8.pdfIn PDF document text
    • https://zuwadakake.weebly.com/uploads/1/3/4/6/134664894/7482e0c8131c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_603fe63e0bd25.pdfIn PDF document text
    • http://erogancolumbia.site/indesign_templates_for_freevdoge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368777/normal_5fc6a6f9a342e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501041/normal_5ffde85a60ead.pdfIn PDF document text
    • https://favexolifuluk.weebly.com/uploads/1/3/6/0/136092880/pilelovut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1080aca8-544c-4596-876d-2e0bd731e24a/chargeur_montre_garmin_forerunner_110.pdfIn PDF document text
    • http://pilujuzaxerek.rf.gd/47497942045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d43b6b2-016b-410f-bde5-0c798bf524f2/how_much_do_charcoal_portraits_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ffcdc0-4ec9-4fe8-95ba-b0f6544d9474/bally_electromechanical_slot_machine_repair_manual.pdfIn PDF document text
    • http://zimemotom.rf.gd/baby_photo_album_design_templates_free.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_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 5452 bytes
SHA-256: bc8d21c95789b58692743d43e3a4aa80c424f35ab350c2a705f36cb9ea4629fd
font_01_sfnt_off0001191d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191D 12700 bytes
SHA-256: c58507a6d0cc2784c5c47eaf3d8e404756e67b1bcdc26890c04494fb3df25a2f