Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76dead596b4abf3…

MALICIOUS

PDF

88.8 KB Created: 2021-05-28 23:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4899b11e03510cf6f055c0651c0cad4c SHA-1: 07127fd6372a8e21696002be17097b5b0440ed03 SHA-256: f76dead596b4abf31268b7e6ab81184e9fd3b3df42cf4b38c8815471b36657fa
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms and appear to be part of a link farm. The presence of a 'download button' heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution attempt. The document's content, though heavily obfuscated, includes references to game mods, likely a lure to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/8psed7a9dl0vh16pem3m4hivc5/mipirewadetapimumuzeto.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f749f8a81a---watukofizavaris.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160795392f3eba---firurororop.pdf
    • https://agrilaui.com/userfiles/file/99978623679.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6c68e68e2---xobozij.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e166df26b---juvojivonu.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/9c159f7f32f86b46ecda16ca36d63da6/3353975619.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/5b4397ab84b8f30e342f96baffd127b7/repakimefo.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba81ae2764---bakub.pdf
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/5e9c64cfdf9a3e777b683295381554c3/kodidoreda.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be5fed9872---wufowagonuposaxaj.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608bdf76b5d5d---xelutowokewew.pdf
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/g923jdtf6a723jflo20r7dgdil/wavupivilu.pdf
    • http://kondicionery-lubertsy.ru/upload_picture/file/97091727644.pdf
    • https://anthonygillant.com/userfiles/file/valovapazu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=gta+vice+city+4k+graphics+mod+download
    • 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
    • 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_off0000ebe2.bin
d38755e928c5ff91fed86fb50789775c9cc29d1786249c06b723c22c626765ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE2 5924 bytes
font_01_sfnt_off0001000c.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1000C 1800 bytes
font_02_sfnt_off0001089a.bin
a26405d6464ec3a6629e138918bdb9be01b002d7e64f7b4d682e71c21a7a6955
pdf-font-stream PDF embedded font (sfnt) at offset 0x1089A 21156 bytes
font_03_sfnt_off00013ab1.bin
92606f7994847df380ed8dc1a3b1370a05c5b1500de4376c98a03971d343c213
pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB1 17176 bytes