Malicious PDF — malware analysis report

Static analysis result for SHA-256 072147a76b055878…

MALICIOUS

PDF

85.1 KB Created: 2021-07-14 00:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 34247146bfa41497f1cfc109187ad2a2 SHA-1: dbba5b1ad0a051df1a965a9d84574d2d1ccb73c2 SHA-256: 072147a76b0558781ef341d35a1807543190b9fd22a2079b1f5cb3e6d35f4508
156 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm or phishing lure. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The primary attack pattern involves directing users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c36e51d0a12---82490970509.pdf In PDF document text
    • http://oldtimerclub-thueringerberg.at/images/file/46410306338.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160babf1a1e661---vobufagijasuduxinadira.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-23/20210523225902271518.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/sp7qrtiammaaredt317963ttgs/87634416017.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/fixab.pdfIn PDF document text
    • https://aokman-drive.com/d/files/rojorokotamipojivupa.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804bdee3564---25233204253.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d2f8726aa---56014195954.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/34154fbe125df36f72262320d200ccc9/93191237385.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/puvenebiwedav.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e853eb7ab63---35101812279.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/3432f5252e2cf195852f7991801901b8/96112026523.pdfIn PDF document text
    • https://sofanet.ro/ckfinder/userfiles/files/fidarafomugitadefokopajub.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa8998b0ba---josolipezivedezipoz.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160718c9a95dd0---11836743824.pdfIn PDF document text
    • http://attep.com/home/sandbox/domains/heekee.com.hk/public_html/ckfinder/userfiles/files/gukezumuxifibedujeg.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160c638f58d5d0---20806466017.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/vrvll1vf7kbhc6kbqirjjt341t/8689745622.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/girowakesunafawejujot.pdfIn PDF document text
    • http://detikakdeti.ru/img/file/nunokategiwoluduwodateme.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=sdlc+process+in+software+engineeringPDF link annotation
    • http://e1pl2.nazwa.pl/busy/fotki/file/naxizeniwakigorip.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000103aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AA 16220 bytes
SHA-256: 5a29357f2a7204a4d38abf757c6241b2d0d9c69088dcb7136dc73207c116f756
font_02_sfnt_off00012da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA2 10956 bytes
SHA-256: 42494dd5267963c851791f8a1c917222df027f3f7d2aa8cc3eff041080441775

Open this report in the interactive analyzer, or submit your own file for analysis.