Malicious PDF — malware analysis report

Static analysis result for SHA-256 296e2d9c1b43711b…

MALICIOUS

PDF

80.6 KB Created: 2021-09-01 01:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b3f1bdbfdaeef15f35af02f43eb3d9fd SHA-1: 0675a3023080377f7dec8cd60ceaf0c5918ca8a0 SHA-256: 296e2d9c1b43711b17495c38fcaac1dc49727e1aa0290846dc13a8098f1f25c6
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers flagged this PDF as malicious, likely a phishing or trojan delivery attempt. The embedded URLs suggest a pattern of distributing malicious content or leading users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://krisoc.ru/uplcv?utm_term=meaning+of+transition+signals PDF link annotation
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/4lilc6dbu2nvotc0o1k1970a6m/65098709456.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/rijuwekorozaxunegikejesem.pdfIn PDF document text
    • http://americasbestwingsbeltsville.com/uploads/files/juvupukotufifurujeme.pdfIn PDF document text
    • https://ratsimae.eemedia/contents/file/lajule.pdfIn PDF document text
    • http://hsiwww.com/image/files/20210714_153312.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/28201251829.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e6dc65d0a5---majulisugifupilaxera.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/89e81e645c6e45e27b33f3518b4c3dd0/ripasamibugiz.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/pifelusefexutexaj.pdfIn PDF document text
    • https://megatex.ua/images/uploads/file/92963518464.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/638a2922dc2285ec81c90504050c9126/55671272421.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/xuzari.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612a6763d6ae1---zusol.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2021-8-30/20210830045011562942.pdfIn PDF document text
    • https://discovercefalu.it/_data/images/file/fisipiz.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/d6o4579mov7spjihi3ivupu0kt/65378275158.pdfIn PDF document text
    • http://tbm-mova.by/images_from_html_editor/file/42403291162.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b73176e9caf---33232073264.pdfIn PDF document text
    • http://presssimayeshahr.ir/pic/file/xurax.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/23dio38eqfn42bdc5l50ames73/78347009961.pdfIn PDF document text
    • https://kfk-dekoration.dk/images/uploadedimages/file/gatuxosopuvula.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/95210018268.pdfIn PDF document text
    • https://avphunter.ro/ckfinder/userfiles/files/borojo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD970 17112 bytes
SHA-256: e2fd445988844de995ca341e3c68cee527900ca8644c23e18ebd3558271dec51
font_01_sfnt_off000104e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF8 10384 bytes
SHA-256: cccddae55564bbe32fc1fdc5a00349f1fb7a7e1014a58bd094e299529c4ece1f

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