Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef01deb7d52f98c7…

MALICIOUS

PDF

124.7 KB Created: 2021-03-18 11:09:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67ab03dcf9f2308148a4478dcb28cf91 SHA-1: 7e9ee98a6a2fc67cc2ea17ec5845e3889ab84684 SHA-256: ef01deb7d52f98c7ca631c38488c42d961a1b83627a72c3e55eb1835dc9553df
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1559.001 Component Object Model Hijacking T1059.007 JavaScript

The PDF document exhibits characteristics of an advance-fee scam and a payment redirection lure, suggesting an attempt to defraud the user financially. The presence of external URIs pointing to disposable hosting and the ML classifier's high confidence score further support its malicious nature. Although no scripts were explicitly extracted, the document's structure and embedded URLs indicate a phishing or financial fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/123?utm_term=capital+one+360+wire+transfer+form
    • http://like-store.site/konatenexo447yb.pdf
    • https://cdn-cms.f-static.net/uploads/4464527/normal_602ee904d434e.pdf
    • https://cdn-cms.f-static.net/uploads/4483082/normal_5fe9345b8c82b.pdf
    • https://cdn-cms.f-static.net/uploads/4454982/normal_600c3f18578df.pdf
    • https://cdn.sqhk.co/matikefateri/3jajdia/life_after_death_album_songs.pdf
    • http://copyrighytsupport.com/xigotejox7jj6m.pdf
    • http://ideal-it.fun/rofofoguvododigoxivowiro22eec.pdf
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fc8c533d6cde.pdf
    • https://cdn.sqhk.co/jarixizotib/xjhhhoU/como_hackear_dragon_city_con_game_guardian.pdf
    • https://static.s123-cdn-static.com/uploads/4381082/normal_5fefe1483e367.pdf
    • https://cdn.sqhk.co/kigaratak/C0hgeah/fikaju.pdf
    • http://cabinetsop.xyz/690046427117a6qv.pdf
    • https://cdn.sqhk.co/zavipudajose/gggh8QP/xadojiwomifusidisej.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3536bea4-71ac-4c79-bf94-a6ae514ff5a7/pl_sql_tutorial_free_download.pdf
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_65222e8622864b4899c66d6c870d01bc.pdf?index=true
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_84640b8bf8be4b5980e701695b6a47e3.pdf?index=true
    • https://e1dd9d5d-2564-403b-b9eb-750b563e155e.filesusr.com/ugd/00b056_e23a2078fa8e41a2ba213aaf85f1db83.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4dabae38-3cd1-4388-87a3-0570a5b76970/goxibu.pdf
    • https://uploads.strikinglycdn.com/files/153b3f2f-07b5-4bb0-8618-88d9d04da228/soccer_drills_to_do_at_home_by_yourself.pdf
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_45eaa83722ea4a7c9c7bf7dbf8ab8f89.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a7bf.bin
3b53a3dd4dbdf9e1fb5c5c75ab0ee271421175ab35a95435e9a5434dc442fbf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7BF 5504 bytes
font_01_sfnt_off0001ba6e.bin
c0245caf48c12846f27da397ef9d50f4934dcce638f04dc4088f887cedcc664c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA6E 12992 bytes

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