Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f7113230245775…

MALICIOUS

PDF

85.3 KB Created: 2021-07-08 07:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7fc5181b6254723f2e129f8f3646ad4e SHA-1: 1750a92b93274c2cb209b96cb26494ac6ca086c5 SHA-256: 30f71132302457752631c66a5aa87816c4da1a3f99c55a24018c14b8d9364b2b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting multiple URLs that likely lead to phishing sites or further malware downloads. The presence of numerous links on potentially compromised CMS upload storage and disposable hosting reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/5if8h6ncrajdbqtm5l4cfdo3mh/diladupaterijimup.pdf
    • http://xn--o79av69abka850ab6c.com/upload/file/202105310924233788.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160789631e4489---mugura.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/c43cb2b4c36f48b3149390127d0cb8d4/jutiwodisojekik.pdf
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5e8eb2177---21761381597.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e67814a8ec---leberexazexegaxijogagomet.pdf
    • https://chp-travel.ir/data/file/69332203119.pdf
    • http://ntep2008.com/UserFiles/File/9695388657.pdf
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/76445420190.pdf
    • http://kwartetproforma.com/userfiles/file/borivivofipagizusizazev.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1612a45602---38114780951.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/2ae99023d0ff533f1f8b5239c6701512/deroledukor.pdf
    • http://svaz-podnikani.cz/files/file/12073649936.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801866e810c---vidokukexizibidogoni.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a19ff5b74ea---13120981758.pdf
    • http://theartofdesign.nl/ckfinder/userfiles/files/vafidugotilefexef.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de1e3101e74---47561525944.pdf
    • http://yuha.be/_files/file/botunaxe.pdf
    • http://www.cerathai.com/image/upload/File/38551928871.pdf
    • http://accessprecision.com/userfiles/file/belumu.pdf
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf986151628---3581316070.pdf
    • http://soflocops.net/clients/81266/File/54162453280.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=proxy+master+free+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://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_off0000ea39.bin
401f868550186d9bd69f16bd63ec045fc5bbec93441d5d97cc5ab9d69ca4a015
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 10724 bytes
font_01_sfnt_off000102f8.bin
64fe8945e0843ce240798cef5093a752b84543a6292a624e2de44b9cef608eac
pdf-font-stream PDF embedded font (sfnt) at offset 0x102F8 17112 bytes
font_02_sfnt_off00013009.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13009 16792 bytes