Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c30e9dcfe51c7d…

MALICIOUS

PDF

74.3 KB Created: 2021-05-21 01:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d0d7804700f44c4302733ccb7038ac SHA-1: fde223d084c4562e127a1946b15aeef7a6161db7 SHA-256: 47c30e9dcfe51c7dbeb6245d884047f8a9c0783d0609cd33537279f77ef984ab
156 Risk Score

Malware Insights

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

The file was identified as malicious by a ML classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. It functions as a link farm, presenting itself as a 'history timeline template' to lure users into clicking on numerous external links hosted on various domains. These links likely lead to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • 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://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/2381d87d3c9e8b516e6525cfe397f276/seporirodusa.pdf
    • https://audit-advisers.com/userfiles/file/76224409071.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607784d84b28f---rakuxutogixasugubibu.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16087fa9654a03---95682429465.pdf
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/8u70i7hno70bsef4cfejujn8r8/zegar.pdf
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608860d3f1233---tovomodarigawelep.pdf
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/486e6492bb961e3bd3c5f1ca150cda50/68034671895.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8700ddeed76f178f72c7e634096d454c/tafebenuva.pdf
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/5ccc5b2469afbe8623abef8eb583b31c/46395432950.pdf
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b4094dd4c---63477974982.pdf
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7628258c8---jukosajite.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607883ef3f099---33252518311.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef92905f37---newukosotatajelizobipezo.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16076915611c11---91795961399.pdf
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606fad712e8ef---53472028532.pdf
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/387c3d15ebca22a002d7ddae07112c04/36035075073.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3d519690d3ad3b7246550ab72002514d/6783719036.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=history+timeline+template+powerpoint+free
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6e8.bin
dd29f5c7a4ff92f09da879ea178998219663dde8d09d2b2cf70a08b5154c2d46
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E8 5200 bytes
font_01_sfnt_off0000f898.bin
c307950b5173733d8f5c59763d4e8902a538a69b0a95bc1483fb064aaa048e76
pdf-font-stream PDF embedded font (sfnt) at offset 0xF898 10588 bytes