Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5297a4df7b2e573…

MALICIOUS

PDF

117.9 KB Created: 2021-06-26 02:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80b3aa877c0778ee5137ab3a91edba01 SHA-1: 6017d4e4ee99b7a09cff74a2646c2c366f1e27cd SHA-256: a5297a4df7b2e57393ffb5d5154262c52c9c4b2164e8dad44677585c4fcdf9a6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the linked domains point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://drafthe.ru/uplcv?utm_term=ln+meaning+in+math
    • http://alwaysfavorentertainment.com/clients/879371/File/69712644029.pdf
    • http://hopsch.de/uploads/file/sidawejigixura.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/8dfb16e63814dbd1af745c02719ccb02/wamuz.pdf
    • http://berbun.com/user_img/file/japapuvafe.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16097de6c08e60---vovegamapa.pdf
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/089542155dd85c44ea79a8e2f7057964/turazotugatudajuziluda.pdf
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/runq9jsqk3uiqnqp5hiao8mfj4/vojawiwebojupumepo.pdf
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887a765e11f---kunufuzotodokowezovejof.pdf
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/cs1i6p2lmvgcihehgempdtoaqb/kubexigoligidizuju.pdf
    • http://www.toptehnik.si/images/mejopopilafunuxutevamaz.pdf
    • http://157.230.241.115/image/upload/File/bufugamusabi.pdf
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e480ac3b7---16546749904.pdf
    • http://varanini.pl/userfiles/file/mikeku.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160af7e5b2be5a---22848324104.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/bd6254428a22f7ddaee53dcf3bd665e5/mejabinitupopuzatuli.pdf
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/53c7f6bae72bef2daf56d04b5ba9d78a/85645374580.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//tifutobezurosodu.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c75dc984eb---buwibubov.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074ad79d21a0---folovunagobutusikemujewo.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/479ddd8b3a7c9bd4ca68ddffa0558802/tesoxupuwodinodoluf.pdf
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606f585dceec2---39946439451.pdf
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/9159a8683e8c0b1a293a5f89d86b854c/92795227366.pdf
    • https://tidurmalam.com/contents//files/laraxuri.pdf
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c3fde79f7c3---17958056229.pdf
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/rpkiad65t9ill65998nlemfcjm/40032878661.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015066.bin
00353569be266d2b5dbce970778574703f2aa2f6e43de57a26d9bd12b6347eab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15066 10076 bytes
font_01_sfnt_off0001668c.bin
9fc4adf05be99ba94f6c9714e81f71f84bd824bf50d5ec5f1123f813e28a211d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1668C 16140 bytes
font_02_sfnt_off00017be5.bin
7c279b0e927b9ad93915ec5c43cb89cc07688b95218aae578cc05c05e426b200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BE5 19960 bytes
font_03_sfnt_off0001b210.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B210 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.