Malicious PDF — malware analysis report

Static analysis result for SHA-256 224584e31c0d2d3f…

MALICIOUS

PDF

121.1 KB Created: 2021-03-10 12:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7615e5cbf9d5c393e7b0c5f0acdc1187 SHA-1: 9b7cdf6a9cc381a98178e274a665783a063a2592 SHA-256: 224584e31c0d2d3fa54058412435c92fb271d6d8a5b5460e39293728f28468c5
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to a 'destruction warlock pvp guide', likely intended to trick users into clicking the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=destruction+warlock+pvp+guide+8.+0 PDF link annotation
    • http://midazimika.iblogger.org/can_american_capitalism_survive_summary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489237/normal_60149740ae3b4.pdfIn PDF document text
    • https://cdn.sqhk.co/sebelokili/ewBhdtO/car_wallpaper_hd_for_iphone_x.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/fixogete_nujogagadugofol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373504/normal_600240c0c7a81.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/hXRjc4F/hnefatafl_rules_11x11.pdfIn PDF document text
    • https://posolefuriw.weebly.com/uploads/1/3/4/3/134374222/voxoni.pdfIn PDF document text
    • https://polerobozugewif.weebly.com/uploads/1/3/4/3/134344868/9034773.pdfIn PDF document text
    • http://nuferakake.iblogger.org/letibefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fd7dc9620297.pdfIn PDF document text
    • https://kotuposa.weebly.com/uploads/1/3/1/4/131406283/53619e4828.pdfIn PDF document text
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/461e1b13785768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491436/normal_600aa806af245.pdfIn PDF document text
    • http://toguvuveleguna.22web.org/bachianas_brasileiras_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_6017b9b3e5de2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rodever.rf.gd/37247615342.pdfIn PDF document text
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_832ee569f6864f538950cbe422f2ff7a.pdf?index=trueIn PDF document text
    • http://parakotevetit.epizy.com/investment_banking_for_dummies_epub.pdfIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_22163df684114575ae4d5b92f1e0eb56.pdf?index=trueIn PDF document text
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_47c76bf357354496a6d681ba650f3662.pdf?index=trueIn PDF document text
    • https://d190c387-1498-4382-a59e-98d1a0a9794c.filesusr.com/ugd/a91264_1b70241c75a44f28a49a3d852dc49b23.pdf?index=trueIn PDF document text
    • http://zijipowatik.epizy.com/fofubinuvapojagodaruxo.pdfIn PDF document text
    • http://vuxomukixade.epizy.com/how_to_unjam_omnitech_shredder.pdfIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_9a73d117fa7c48d79ba68e35a67b1270.pdf?index=trueIn 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_off000199fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x199FE 5824 bytes
SHA-256: 6a0cfecd939fc3f7b2461b86201ec008fb028926492aa12b8ef109fb01a18486
font_01_sfnt_off0001ae03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE03 11684 bytes
SHA-256: d84d50655345db39f3677dafcc158fc2478c904233355d11e6702e355322c1ae