Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f6ee332f81a63d…

MALICIOUS

PDF

89.9 KB Created: 2021-08-04 15:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: da1049dc5bcd3a8b9e390c7b6dab43ec SHA-1: 2f4406aea81254d91938250a91738685c053c030 SHA-256: e7f6ee332f81a63d7a15f835068dee59e40732fa8049495711c30c1ca5b06c49
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, exhibiting characteristics of a payment redirection lure. It contains numerous links to external PDFs hosted on compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content or phish for financial details. No scripts were extracted, but the presence of multiple suspicious URLs and the 'SE_PAYMENT_REDIRECT_LURE' heuristic strongly indicate a phishing or financial fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • 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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081aa594de59---fipapixomebimamenimogus.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/0d859bcb293b92b87a77920d3b8e67e1/xuxigilubo.pdf
    • http://akkoryazilim.com/userfiles/file/lonusafijukobo.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7f9fbce62---89360023774.pdf
    • https://karapinarinsaat.net/userfiles/upload/file/misagekijanebuzidufono.pdf
    • http://files.ibiza-ferien.de/file/rapavuvusaganesepodatajib.pdf
    • http://dastone.ru/userfiles/file/xugokuxusumeralunerov.pdf
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/858d6d24c658de899fa6e674f91fbf13/74909011762.pdf
    • http://lyzebrno.cz/userfiles/file/72837835187.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/161032aa65b25b---tevobebotadikusujuxasexa.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087abe849999---36855573448.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2faa37416---kelobosaperifekudibegar.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c154163e60f---gugadopusofuxizur.pdf
    • https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/fudozi.pdf
    • http://zonazero.es/userfiles/file/340668634.pdf
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/74b95da7235a93cd3b80827faef0223b/85722554350.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/hr3qkehsvnt14fopp3suchph6h/16692689643.pdf
    • https://istanbulbalbir.com/upload/ckfinder/files/55412619672.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/60b0d0739cb243ec181d200550328f11/mesebubusaj.pdf
    • https://airbays.com/userfiles/file/rokigexoju.pdf
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/4ea1b7fe9076311a37633c555cfc676c/xitumatusuworu.pdf
    • https://excore.hu/ckfinder/userfiles/files/nezaderu.pdf
    • http://sapaelitehotel.com/webroot/img/files/84793015899.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=what+is+the+moral+of+the+lottery
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa46.bin
3120b1642b2455ca877e0cbafa1f874ed50b251143cb57b59fc9456bb9573873
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA46 10480 bytes
font_01_sfnt_off00011227.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11227 16792 bytes
font_02_sfnt_off00012a39.bin
ad7b4be9d0027ce5259d21e915683c3f84ae34ab2061cb5fbaf9505b21880559
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A39 17200 bytes