Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c0055fcd191971…

MALICIOUS

PDF

208.8 KB Created: 2021-06-30 17:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5547c81363371992a109642867bd7522 SHA-1: 63f51926458df51778db0fba6eaf0923dee931c0 SHA-256: 98c0055fcd191971ecc59ae992b25f45599539599c7cc02ba76c01450ec3f0bf
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content. The file's structure and embedded URLs indicate it's designed to exploit users by directing them to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8243

Heuristics 5

  • 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.
  • 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://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/925bbd140d3a93dc5d406a3ea74c3b46/60652279500.pdf
    • http://novosib-sport.ru/ckfinder/userfiles/files/99716595507.pdf
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/99ecf2202c391b341964e0d2441d476c/74126878292.pdf
    • http://apricomm.com/userData/board/file/losopipiludove.pdf
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16072423e6d93c---63264040687.pdf
    • https://yz-yongzhong.com/upfiles/editor/files/93572131442.pdf
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/c48b72ef7aff99a51b4f8d665f9387cd/matisojekujejizironetamuv.pdf
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac831a4a111---8902901827.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986bdb7217e---robesukodidipidixonirewif.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/44k73hhh6la5mtnasa96hk4imd/98603564049.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c94ae076bde008564f6eb338b4230fb6/xageletudulirurimubox.pdf
    • https://flyags.com/editorResources/file///pejafidijaravaxon.pdf
    • http://www.bash.cl/media/file/suwigipadenorinoxibazo.pdf
    • http://eatatrudy.com/uploads/files/pifadenodikanewojepav.pdf
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/cad3ce7252497de4ca83cb68670da846/fodogudodefavuloj.pdf
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079cf73b4a17---lemigepamulubuw.pdf
    • http://amon-syotengai.com/userfiles/file/febarutedidoregutokofikak.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba1a9910b0---1779666656.pdf
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/4e5bpf4107hhgo26hqjsgoaue5/xememoxurunowefil.pdf
    • https://saunadlaciebie.pl/userfiles/file/fumajowobexajix.pdf
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/479d7bb438d3931172debfcf9c1f8bef/21152743097.pdf
    • http://formel1vermietung.de/userfiles/file/vedozaxiril.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=hyyh+forever+young
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0002e115.bin
80de01fe624b945f1f3ead9ffd65bc764bc2bd0ce2243fe16a51e902daf5eacd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E115 33428 bytes
font_00_sfnt_off00027102.bin
ee86d4b1cbbefb21add100093c4ab0bbb1e5b85801270b393b6b6a10b3660847
pdf-font-stream PDF embedded font (sfnt) at offset 0x27102 12616 bytes
font_01_sfnt_off0002994b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2994B 16792 bytes
font_02_sfnt_off0002b15d.bin
7903131468f14d504c7c2189de2845103f2541a6317409fc6473b1a3b90c7c9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B15D 18032 bytes
font_04_sfnt_off00031d20.bin
efbe83a660a496fda3f71b571aec5f619942531dfd23ed66d42abda619cf33b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x31D20 10196 bytes