Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a64e1e6df6203e0…

MALICIOUS

PDF

129.8 KB Created: 2021-02-15 20:42:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ac082b1701ad1aa3308b8786d3b74e9a SHA-1: ab63cdc535fd668715d74d7e3a18a185a7bfe7cc SHA-256: 6a64e1e6df6203e06af8e5783865e9b5d5b39fc7fe327d0db27671e2452257ed
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating a payment redirection lure. The document contains numerous embedded URLs, one of which, 'https://baarspo.ru/strik?utm_term=dark+souls+2+cheat+engine+ban', is likely part of the phishing attempt. The PDF structure and embedded content suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://baarspo.ru/strik?utm_term=dark+souls+2+cheat+engine+ban PDF link annotation
    • http://sawumivulopajud.22web.org/bilutotejipomigegusutew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_5fd3b46d11a6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5feb958ddd89b.pdfIn PDF document text
    • https://cdn.sqhk.co/lusoxepero/jjgeXgc/green_poop_pregnant_nhs.pdfIn PDF document text
    • https://cdn.sqhk.co/joxezexukub/igphcif/94134607532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446773/normal_5fc679cf0ceb9.pdfIn PDF document text
    • http://tanuwoxomasosog.22web.org/detogutunazirunomusuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392877/normal_5fc779225b669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5fd34f3a24c60.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/TH2jcib/55355993453.pdfIn PDF document text
    • http://bavakobo.iblogger.org/adodb._dll_for_windows_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459636/normal_600f49ca6ebff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479470/normal_600ce84c98e65.pdfIn PDF document text
    • https://cdn.sqhk.co/vopokemib/mqgh7oB/35583787761.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wijexir.epizy.com/vefewigawiduwineki.pdfIn PDF document text
    • http://wepilujal.rf.gd/best_third_person_shooting_games_android.pdfIn PDF document text
    • http://vojevawe.epizy.com/calligraphy_worksheets_for_beginners.pdfIn PDF document text
    • http://nefigubisi.epizy.com/74910335358.pdfIn PDF document text
    • http://gezexibubaju.rf.gd/cantilever_pool_deck_forms.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001a123.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A123 18624 bytes
SHA-256: e2f91b055a045d5636ea0b1a81bbcb9f0368a2929b8a66c36729cdf119283698
font_00_sfnt_off00018ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18ECE 5396 bytes
SHA-256: b10646e7d74bacd6926e6e579ad52379ec37abc662de9ba5bd4a13f7218cff34
font_02_sfnt_off0001d2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D2C7 11276 bytes
SHA-256: 5f833a69b22e079dafcc74e108c460f16ae2b8fbae6cf73c679915a6fc786c19

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