Malicious PDF — malware analysis report

Static analysis result for SHA-256 410b336b20e5bd01…

MALICIOUS

PDF

99.6 KB Created: 2021-06-26 15:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2b11f65a295073ff50622477a4445f51 SHA-1: 07332be4ae94331fba6f0c81a1d277d1fa3b683e SHA-256: 410b336b20e5bd01cc541afb9c99640f091e90ca53a9f13e42f7d8f9fa639f34
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing or malware distribution campaign. It contains numerous links pointing to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to obscure the final malicious destination. The presence of a callback lure heuristic further indicates a phishing attempt, likely to trick users into calling a fraudulent support number. While no scripts were directly extracted, the overall structure and URL patterns strongly suggest the document is intended to lead users to malicious content or solicit sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9781

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://coretry.ru/uplcv?utm_term=meaning+of+privily
    • http://dissanna.com/temp/fckeditor/file/fajolidenoza.pdf
    • http://taxilitomerice.cz/ckfinder/userfiles/files/18280463370.pdf
    • https://qnzar.com/files/24231076058.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb966c03905---mikejufo.pdf
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbe94c6a5b---51706845009.pdf
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/d9e75dfd0e7c95fcb5aa5d7a0fbcaf8c/bodoronavotobixujefenaro.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb1365a2a7---petegubezojekovulazujunez.pdf
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160c208f01e0a6---99845924975.pdf
    • http://tktravel.shop/FileData/ckfinder/files/20210608_F8E0DF507762F85A.pdf
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0911982043---bonerugep.pdf
    • https://sfeerweter.nl/userfiles/files/42442033382.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/fb7bb3239c4527b9468d2343835c2f34/xabediwikegoxofazilewa.pdf
    • http://namthangbasaltstone.com/uploads/image/files/11614180560.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607d770a4a7da---81104766859.pdf
    • http://georgekoldun.com/var/upload/file/99341709907.pdf
    • http://ezibra.pl/upload//file/64689000651.pdf
    • http://brmxn.com/userfiles/file/20210531072953_pzg9t4.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a36d59577---vonazuvomefosepekoze.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a4ea73a179b---virekemofimi.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b956d53d71e---78334640896.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160985a94667df---19957332563.pdf
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/200254370d8ea756a962618fbb10c72a/57113189048.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098a2b5c4e3e---17849101223.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00013bb1.bin
d9f5e66163d907df9b2c2f031b8906ab183602eda4757f3e8ef428a9cf922d60		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13BB1 18328 bytes
font_00_sfnt_off0000ea67.bin
c5a78a33c4289f154854d2a74cecc6e7573fca98e655677a601f3c59185d4f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 23296 bytes
font_01_sfnt_off000123f3.bin
5057761c99d4f8b5c97cb15a4419f9c2f39c93a9ae6011d68d8f164c42266f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123F3 10440 bytes
font_03_sfnt_off00015949.bin
08440d386108ac8e117a7347a45da442ea17779e57225ea1a18606975782434b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15949 4000 bytes
font_04_sfnt_off00016869.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16869 16792 bytes

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