Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4e5642f7146214…

MALICIOUS

PDF

87.5 KB Created: 2021-06-26 09:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1718ff4e5198b46a91c21bd2f409ec9a SHA-1: 47b1f57ddb08036271988c2bd50758fdc067ef1d SHA-256: 0d4e5642f7146214222825ea3ead5a0ae99400527454e0a21ffb6279f67a266b
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/263955f0e4035adedd4b17c490fb6499/17624101951.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607920813e6d3---jemuzaxusim.pdf
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/786160bb8267c74f2a638208b0798f63/tawopozepezur.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/bb06a62b5ce568d445954de694cd12af/dabura.pdf
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/93323431062.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/2491a0d8dc7f7c9ba6baa0969e11447e/panere.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8bbf0eef1---37712425023.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160cd5fad21e8e---39665503153.pdf
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160772874af570---tibekatujesanodo.pdf
    • https://pharma-tools.eu/galeria/file/jedekozolikojexitabegi.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/dsgqbnf4dg28bq7srpckn7j8i0/jiwepubixinogibaxi.pdf
    • http://koryosushi.com/uploads/files/lapizodogeroxorawisa.pdf
    • http://artecgroupservices.com/imagenes/file/bazaxikuwotuduf.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/9acfec5a513a3086f4c31ef5da5c8ef1/koxezoriz.pdf
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/rjamoclg61tvfudeomrdtrtkaa/42249831836.pdf
    • https://skspiti.com/userfiles/files/32819952255.pdf
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/1eb9e7807d634a4b4121c807927c3c12/78134742950.pdf
    • http://snotlicker.com/clients/10243/File/gepopofuk.pdf
    • http://caratow.nl/userfiles/file/89836462470.pdf
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b32bdb93447---punufuloxukoden.pdf
    • http://cnhhgj.com/upfiles/userfiles/file/xemukixevikine.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b9bd07646---jurujonobetepabatenugojiw.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=abraham+accords+prophecy
    • 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_off0000f53b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF53B 16792 bytes
font_01_sfnt_off00010d52.bin
97c1fc6629fb74777ae73787927ae46ad137e0b4bfed42fba6231b847ecf2a3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D52 10672 bytes
font_02_sfnt_off0001259d.bin
c6ded223d4bce287bdfd04cc11c362ba63f9058d4dbba065929a1d904b70ff4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1259D 16756 bytes