Malicious PDF — malware analysis report

Static analysis result for SHA-256 362ccbc114290120…

MALICIOUS

PDF

85.2 KB Created: 2021-06-26 04:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4902e9ead38eb540f6a351f20ba74125 SHA-1: 4880b72bbb24bb7db94c87aa672965fa98abc8c7 SHA-256: 362ccbc1142901202fdf7aebe536f2c6d749134a2f720e9b9f8a511812727648
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream, which is often used to download and execute additional malicious payloads. The numerous URLs, many pointing to compromised WordPress sites, suggest a phishing or content-luring campaign. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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://medvor.ru/uplcv?utm_term=income+statement+revenue+and+expenses
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e3c5b9307---zimapojixubojogofuro.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b130a393a37---siwelafuliv.pdf
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/19c8dc7033f58bde40dc1486e461cc55/82435910151.pdf
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/dc51bac63e8802d481f525484146ab8d/tigosatanezoduzokajebatux.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a56017e6185---totexiruwixagadema.pdf
    • http://matonaklawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jijeruriwifawewikazuvuwib.pdf
    • https://topclassgreenery.nl/images/file/17335217483.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/e2emu5be2mvhac52ld72vbdbdk/51512139637.pdf
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/c5835feb14b5bc36afe13587ceb9723c/37662082956.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/svh8d8cn3gen1jdmvfhcgca546/54119262442.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/keuf7vfdf60ba9o5rq27hlsqsd/75344573190.pdf
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607beaa24a8ec---82260715712.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ad961d6a4---kefelefadajifazexogu.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9653795c98---99423536048.pdf
    • http://sparkpro.lv/content/file/76505738201.pdf
    • http://aarogyamedico.com/userfiles/file/rikeraw.pdf
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a96e24729d9---sulipotabina.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/3284aa6ed335ef184179a12abd6556da/duturajagijowijivupevo.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a994dc37d63---sebuzekaniworilutetumat.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/a24elghd59m7bsuhks9vuc9ok5/72070132633.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a7880e71864---vijamu.pdf
    • http://alnoorcity.com/userfiles/file/mejozaj.pdf
    • http://polloricowings.com/uploads/files/vurikudomob.pdf
    • https://soyana.de/js/ckfinder/userfiles/files/pomewuwuke.pdf
    • http://curry-box-deluxe.de/userfiles/file/zasegizewonumazetibumux.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_off0000ea15.bin
d0e3eaf4de74580c7cbdc3e007024294af134519250e89621f7ec29d672fdc28
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 16360 bytes
font_01_sfnt_off0001147a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1147A 16792 bytes
font_02_sfnt_off00012c91.bin
fa1fb853f4fc6da5369830e732c927744e01f41588c9027d72dc178e797ce01a
pdf-font-stream PDF embedded font (sfnt) at offset 0x12C91 10756 bytes