Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9327d0ee4bb13dc…

MALICIOUS

PDF

73.0 KB Created: 2021-03-23 15:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 1b656d3ca0eaac0fd74488bdafb9c5e0 SHA-1: 9f226c7143f953bac4f84697aaf1901e54b89690 SHA-256: d9327d0ee4bb13dc725da483a898687060c06f7da6eb261228ea49043072959e
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a payment redirection lure. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting an attempt to redirect users to phishing or malware sites. The document body, though partially corrupted, contains keywords related to financial transactions, reinforcing the lure.

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
  • 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://midufefew.ru/wix?keyword=gift+deed+taxes PDF link annotation
    • https://cdn.sqhk.co/veletafi/gdv0ifS/word_on_fire_podcast_mass.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477910/normal_5fcb7bd350ca4.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/gihdYOx/da_approval_times.pdfIn PDF document text
    • http://madusotiju.22web.org/9706675935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492281/normal_60397046cff9d.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/O9c4jdH/neopets_island_builders_recipes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471723/normal_602aea60b21b4.pdfIn PDF document text
    • http://xidonezojo.22web.org/futekajolewetozunizeme.pdfIn PDF document text
    • http://vafotaxikijofol.iblogger.org/ultrasound_guided_lateral_femoral_cutaneous_nerve_block.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410416/normal_5fff3fe0203fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450260/normal_5fefe6b16d0e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_6055451db776d.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/iX0JMhi/how_rare_is_galarian_zigzagoon_pokemon_go.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379720/normal_600923745181e.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/f9b7a9cb-725e-4a87-b293-3e663f1ddcfc/hp_laptop_probook_4530s_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0335455a-f85b-4f5d-b5e0-16b3007bd327/why_is_my_nespresso_blinking_red_and_yellow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/350bbb67-f15a-4354-9367-45db06d89cb2/19909410415.pdfIn PDF document text
    • http://wajiletum.epizy.com/lorinop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89989f4a-2daf-4d4f-ae61-cd50beda9f5b/nukefafepoma.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_off0000e191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE191 4872 bytes
SHA-256: 83d803601a432924e1cd1dd686aec85e26aade1fb4ae7f75818d217825765bf1
font_01_sfnt_off0000f242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF242 10724 bytes
SHA-256: 70a440a4281e76bd493b7162f4be8075b301ff02566432d648e187af9d216ecb

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