Malicious PDF — malware analysis report

Static analysis result for SHA-256 0674d2b94e15e112…

MALICIOUS

PDF

77.0 KB Created: 2021-08-10 08:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 72a978cf70f2a09d6bc38a6ae8ea090c SHA-1: a60c2d8bd7c9f60c027e777e63f68436305c4cb0 SHA-256: 0674d2b94e15e112d1103cf35978dee26bf77334abf4e8435254e6c2e87b1c75
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains. The embedded URLs and the document's structure suggest an attempt to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/vki0r0ha2darlpdub13m2ain55/notukubilamij.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c970f3eb2eb---43873552543.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/4j961hngfsre1e0i517hb40n45/17682678857.pdf
    • http://aj-logistics.com/stock/userfiles/file/jijesizikoxekuj.pdf
    • http://chickenwild.com/upload/contents/images/images/12662736934.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94fa78eeb---6237564814.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aaf751b039---nomixonufobudoxovax.pdf
    • https://camping-du-lac-dijon.com/fichiers/22567842032.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160879b9151256---zuxaleparesatuzomurugiw.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c23573d363e2c06e2eddae6f6db70d50/fikeleguwid.pdf
    • http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/gilajalaretu.pdf
    • https://globportal.com/upload/userfiles/files/2485480963.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d300349613---22157619403.pdf
    • https://arichaindia.com/userfiles/file/goguwixegunelotejidewu.pdf
    • http://allprintusa.com/admin/images/file/lafifeset.pdf
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/3709cab6dd99d20c82d20be944e9e8f5/tukatexelixakomufo.pdf
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/42617031929.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609480fdcd6af---85035431591.pdf
    • https://bushregenerators.info/userfiles/files/kisadiwerojol.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f454892ab62---70567490949.pdf
    • https://oncetrabzon.com/resimler/files/29900862314.pdf
    • http://qca.ch/userfiles/file/13374292876.pdf
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f230a3a1e6---veweg.pdf
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/6e0e4d4f06deb3538bbee9343060851f/sigamadisa.pdf
    • https://grupo-kayros.com/userfiles/file/dibanudegojowatadomunesi.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=palme+yay%C4%B1nlar%C4%B1+9+s%C4%B1n%C4%B1f+edebiyat+soru+bankas%C4%B1+cevap+anahtar%C4%B1
    • 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_off0000c483.bin
68ba7c650f0a18b306693a77fc5dd048df6159a4b20e0afd356e8aa006952ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC483 11612 bytes
font_01_sfnt_off0000dfb2.bin
b98f910d4c329165ef8e1f23f5b9617ec41943117d8c360cfe4e6eb86701c1de
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB2 17712 bytes
font_02_sfnt_off00010a7d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7D 16792 bytes