Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a6b2277e36299d…

MALICIOUS

PDF

105.8 KB Created: 2021-07-14 05:34:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b98d154a0e28854f30ae86084a1de917 SHA-1: 57b08cc83c2e768998f1649f0c5103b4f5fe1da6 SHA-256: 94a6b2277e36299dd3671a56290f283ccd3c5e335a94ec1b3ba9c09211dccfe3
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URLs, many of which point to compromised WordPress sites acting as link farms. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's content is designed to trick users into believing they are receiving a prize or parcel, a common advance-fee scam. The embedded JavaScript likely facilitates the download or execution of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=rice+production+per+hectare
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a619b035a0---kijogasikerabevuj.pdf
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/59280971832.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee0ae8b5bae---nasino.pdf
    • https://laurallo.com/ckfinder/userfiles/files/sazuruxarefovabilinaviwun.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b50abb3b9---44196502486.pdf
    • http://ipost.mn/ckfinder/userfiles/files/pomelim.pdf
    • http://garageanything.com/js/upload/files/24935215661.pdf
    • http://salon-urody-bellis.pl/images/file/87897868488.pdf
    • http://www.europesolidaire.eu/userfiles/files/dabixevibovake.pdf
    • http://sanarina.de/ckfinder/userfiles/files/22298776852.pdf
    • http://caryhigh1987.com/clients/41333/File/7811123725.pdf
    • https://bluza-shop.ru/content/File/xevosiximijaduliti.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/fb0c6bafd0cce3639fe4b5ca773b9b7a/16132746448.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608557b181252---posumidababuvo.pdf
    • http://hongdacable.com/d/files/losamexerufe.pdf
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/a4e3c3c05369f2728bb2fa089550bbe1/xuramuturevexunikukav.pdf
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c0e396905---33538802539.pdf
    • http://jullien38.com/ressource/site-image/files/62329127573.pdf
    • http://ahlhy.com/uploads/file/260052497789.pdf
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/8aa53ae47a4fde569ae00a6e8fb946a8/28818131899.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084256e8f211---xatalisesaraxoxo.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079765b0ace6---lafave.pdf
    • http://sahamit.net/userfiles/file/xuperorinowebinoki.pdf
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/27233297239.pdf
    • 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_off00013bc2.bin
a24952c928d5efa0bd6968ccc2f6350c092ef53141504bc82df10574f01d67f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC2 17548 bytes
font_01_sfnt_off000169e0.bin
33ce878ae87f1a58682865d3f0fa642818273bcebc16e258e14f013e4c85c986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x169E0 10540 bytes
font_02_sfnt_off000181d2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181D2 16792 bytes

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