Malicious PDF — malware analysis report

Static analysis result for SHA-256 7258f3192ad340a8…

MALICIOUS

PDF

86.9 KB Created: 2021-07-09 00:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 608943d8686d7fd012937c1bca99aaef SHA-1: ebc84dde04566596f0cfaae1b0c0f6bbe2a42e78 SHA-256: 7258f3192ad340a89e9b3bac2a944c04628899900b38f04d41bdca1e2c6fe108
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, using lures related to lotteries, prizes, and parcel delivery to deceive the user. The presence of numerous links pointing to compromised CMS upload storage and disposable hosting further supports a malicious intent, likely to host or redirect to malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075247eccb0e---tunavuwelosam.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/fce1cc2f216310d96ee453a28ccbe14b/lametobuwow.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ba991d6dd---75682362350.pdf
    • http://meteosputnik.ru/userfiles/file/33732869984.pdf
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3703d219b8---wuforunozifaxoveres.pdf
    • http://vizugy.hu/uploads/files/tubazoxirugejogoxa.pdf
    • http://smclassof57.org/clients/34860/File/71100348971.pdf
    • https://energooptima.hu/upload/File/2994087412.pdf
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/volebalixanugapa.pdf
    • https://thietbivesinhanhhuy.com/asset/files/pipokiparemesa.pdf
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/ddaaa4f560905516c753ef50eba60f30/sokonazipenedobu.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e3a17b3e0---80634531267.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609471206cdb3---jebesewatu.pdf
    • http://toshiba-center.ru/uploads/files/41598970687.pdf
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/7703438ccb8f4a811dbff6bc1a94ea16/90191749577.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/d0c042bc02ad8ba8129a88c8c1ab5656/vejom.pdf
    • http://imailbox.nl/images/uploadedimages/file/gaverorozawepilepif.pdf
    • https://cornerstonelaw.eu/userfiles//file/53708199528.pdf
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/2fbf9c51226fe6d26687d037cb68e2ff/xenute.pdf
    • http://densayhongngoai.com/uploads/userfiles/file/69098326207.pdf
    • https://kawanmto.info/contents//files/repavabifijaf.pdf
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/vu1c50eeh3r9jeg7qihqitsba1/22576482758.pdf
    • https://geneolock.com/locktactyuma/userfiles/file/reladi.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609a888b2a693---46068289030.pdf
    • http://darstin.com/userfiles/files/3264769995.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=best+video+player+software+for+pc
    • 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_off0000f197.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF197 16792 bytes
font_01_sfnt_off000109a9.bin
2549eb97b13f8b0b7e97532d853e18e624a54f405c8dcec6198fad201c4a5ef8
pdf-font-stream PDF embedded font (sfnt) at offset 0x109A9 16628 bytes
font_02_sfnt_off000134e3.bin
64a2455ef865860c0c294c41d6d6fb123d0366bcc46311000dbb3ec273371d9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x134E3 10828 bytes