Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e2adedaf59ff16…

MALICIOUS

PDF

91.7 KB Created: 2021-03-01 21:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a4e870dbdd80720e610a12981be5684d SHA-1: 6aeddb6ebea36384f4ce6fb473f5b6399c846f51 SHA-256: d4e2adedaf59ff16b8f57aa3a216ebd05b156243ce500f6f5a8f0d990849f043
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF document exhibits multiple high-risk heuristics, including ML classification and ClamAV detection as a phishing trojan. The document body, though obfuscated, contains references to 'pubg hack apk uptodown' and embedded URLs point to suspicious domains. The presence of 'SE_PAYMENT_REDIRECT_LURE' and 'SE_CALLBACK_LURE' heuristics suggests a phishing attempt, likely to redirect users to a malicious site for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 7

  • 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.
  • 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://xajibur.ru/wix?keyword=pubg+hack+apk+uptodown PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501029/normal_5fc8aeffd342b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_602788c785f52.pdfIn PDF document text
    • http://espaceabone.com/923294873392s1el.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/dHhegf4/wazinuzadej.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/GqVIijR/church_at_the_crossing_passport_to_employment.pdfIn PDF document text
    • https://cdn.sqhk.co/bivaxijo/2hhALKO/bikuwujifufekowop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_60327885725a4.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/penejoginonajugabi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369514/normal_5ffe5440a781f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414701/normal_5fef78bbb606e.pdfIn PDF document text
    • http://xaduwojitodefo.66ghz.com/jesisi.pdfIn PDF document text
    • http://clyb-wylcan3.space/99824498152eycix.pdfIn PDF document text
    • http://profaudit32.ru/beganafikgtnx3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473963/normal_602c3be7cda66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383567/normal_5fede36d10ffa.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/xefisotukozonevikiv.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/bewopomemufujitelologizib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_6037cb39093b7.pdfIn PDF document text
    • http://dressnbuy.com/do_you_cook_brisket_fat_side_up_or_down_in_the_ovenhq6rs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifofiz.epizy.com/32828851358.pdfIn PDF document text
    • http://dufogatate.epizy.com/klasyfikacja_zaburze_psychicznych_icd_10_chomikuj.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/is_cbr2f2_polar_or_non-polar._explain.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/dyson_cinetic_big_ball_animal_canister_vacuum_replacement_parts.pdfIn PDF document text
    • http://saduzubut.rf.gd/84908049386.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000134c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x134C5 24204 bytes
SHA-256: 1885d59685a073a0c899f04491517189963cae4ce526932ca83ce93170dfd951
font_00_sfnt_off0000d838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD838 12988 bytes
SHA-256: dca430440c3757383c7441342b1c3a37edf9af1c57086a96f5303018894ac747
font_01_sfnt_off00010065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10065 5324 bytes
SHA-256: 17c0f0401e5a7e5afd644eaf7f86067acfc9121a2cf6f98fa073216e3dbf80c0
font_02_sfnt_off00011293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11293 9968 bytes
SHA-256: 59f264e32a1fa8b0d20b8d0dd362f2f2282f552b8436c91b4e12d1422944af8c

Open this report in the interactive analyzer, or submit your own file for analysis.