Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6795c170412267…

MALICIOUS

PDF

108.4 KB Created: 2021-07-17 04:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3cba64ed610730016adec22cd38d89cc SHA-1: 9d097b34b6c81f74fc618fc541afe3ae7de01af9 SHA-256: eb6795c170412267961ad07a5253a57f55180e91dfde2e056a9ef259f6ebf4eb
196 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as a malicious advance-fee scam lure, containing language related to lotteries, prizes, and courier delivery. It also functions as a link farm, pointing to numerous compromised WordPress sites and disposable hosting domains, likely to obscure the ultimate destination or host malicious payloads. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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
  • 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.
  • 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://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/41bbcf1901ccdfb21dbc808d2200a7ad/93237599163.pdf
    • https://nowtravelasia.com/userfiles/files/soloxeva.pdf
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/4aca55d5465531e32208033e59372154/sujodemetoxiruxewida.pdf
    • http://best-infosystems.com/userfiles/file/fepebenobulovalilabaza.pdf
    • http://agendaalzheimer.org/files/galeria/files/25139862785.pdf
    • https://euroroma-bg.org/files/file/99220738714.pdf
    • http://bearings-home.com/userfiles/file/93474692888.pdf
    • https://alternativecarrepair.com/userfiles/file/17229617540.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/166ed810a5993ca1472e48f7ea8c340a/20174807460.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160beb43e61f4d---8251530504.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/bes231jc22dnlmuhdhpl7ohig6/80213370823.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e86e1769b6---pilifizojulakisaminari.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607b23f69231b---92419550956.pdf
    • http://pwr-tech.ru/userfiles/file/30601043216.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc0ae29b38d---gupulajubu.pdf
    • https://bd-sokolovska.eu/userfiles/file/6568764138.pdf
    • https://internationalmedia.com/userfiles/file/tafobotosi.pdf
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/9692gp8195tf5p4vho11avd18n/83822449538.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072cbbba151f---78712397875.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/2eba2c74474ac01ca5a7a4f1a316af2a/26025302712.pdf
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/78tdpbq2oedqbtskdl28fqheq4/57524942341.pdf
    • https://neplatnasmlouva.cz/soubory/juraselorevar.pdf
    • http://abbwingslynnhaven.com/uploads/files/vapezateporoku.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/2119994ac25aa8acd2bda39b5eb3b820/52683640064.pdf
    • https://nhahangbienhaitien.com/uploads/files/jubabojomaduvuve.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=good+food+sweet+and+sour+chicken
    • 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_off000141fd.bin
798215774b5b29e627fc09d27caff7f260a431763a5740fb0f3a6487ff5f9f92
pdf-font-stream PDF embedded font (sfnt) at offset 0x141FD 10844 bytes
font_01_sfnt_off00015b1a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1A 16792 bytes
font_02_sfnt_off0001732c.bin
28d6c9293a9536693cbd5f6bf52f0a1ee32dc6f88547b5152f124ec6508a7a11
pdf-font-stream PDF embedded font (sfnt) at offset 0x1732C 18548 bytes