Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0a64bb67b4e8ee…

MALICIOUS

PDF

68.1 KB Created: 2021-10-03 22:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 548a5852b2daf45cfca8873e168e3ceb SHA-1: 13a034e618d5dffe6fc822c9e482d6fd9d504cff SHA-256: eb0a64bb67b4e8ee24e08fe048f65a48b167ca4ba9df6920191a26b1ba1a4309
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious phishing lure due to its structure, which presents an image-based interface designed to trick users into clicking embedded links. The presence of numerous unknown URLs, combined with ClamAV detection and ML classification, strongly indicates a phishing or scam campaign. No scripts were extracted, but the document's nature suggests it aims to redirect users to malicious sites for credential harvesting or other fraudulent activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://lysfyyy.com/upload/files/64340387487.pdf In PDF document text
    • http://homeopathyhongkong.cn/files/fogonelikunanijuwemis.pdfIn PDF document text
    • https://jajugroup.com/ckfinder/userfiles/files/91189071604.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/15903825256.pdfIn PDF document text
    • http://derp74.fooden.com/UserFiles/files/30649435815.pdfIn PDF document text
    • http://casadiriposomarsala.it/userfiles/files/duduvowevuzubejupetamipi.pdfIn PDF document text
    • http://sportingfoundation.com/uploads/file/jajakavebenifudu.pdfIn PDF document text
    • http://zbirozskepodzamci.cz/userfiles/3717750711.pdfIn PDF document text
    • https://sitarasign.ir/data/file/5076256898.pdfIn PDF document text
    • http://yourbuilding.ru/userfiles/files/19838477456.pdfIn PDF document text
    • https://sindicav.com.br/ckeditor/ckfinder/userfiles/files/22140512942.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/28621459864.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/xanoridagebixone.pdfIn PDF document text
    • http://sherwoodonionfestival.com/ckfinder/userfiles/files/fopezoxigapanokugijim.pdfIn PDF document text
    • https://korvioinfotech.com/ckfinder/userfiles/files/vowideritubo.pdfIn PDF document text
    • https://zenmobile.in/jaipriyart/uploads/files/zodologunasujo.pdfIn PDF document text
    • http://snft.ro/media/file/vunefox.pdfIn PDF document text
    • https://rux-thai.com/ckfinder/userfiles/files/82415738582.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/kekr1gt9hkled2fo37q1o9toa8/gezoxojiv.pdfIn PDF document text
    • http://energcomb.net/cms_enercomb/sgi_userfiles/userfiles/files/16577626655.pdfIn PDF document text
    • https://southernwashpros.com/nbloom/fckuploads/file/lopubazarivawezivaniwimon.pdfIn PDF document text
    • http://csc-028.com/userfiles/file/20210910151644_3z3jmc.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/14687476825.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=portable+pdf+password+remover+3.0+free+downloadPDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ace8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE8 11220 bytes
SHA-256: 1802ded3c3d64d3494c4a301376e91f8d73775d93b7616be803c835081e472ad
font_01_sfnt_off0000c720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC720 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000df32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF32 14312 bytes
SHA-256: c5f97e504900049b443aff94fb0be9802a47048109034fcaf9615679086364d4

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