Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80af262b1001bb4…

MALICIOUS

PDF

73.7 KB Created: 2021-09-05 09:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1685634d722877a20d8f4b1401c4a4d5 SHA-1: 19e2d78dee6f66b8c1371d1f0716a813d43d3021 SHA-256: f80af262b1001bb476b97e4526a69a774f2471136b19391c2f7682fbc056b1d8
156 Risk Score

Malware Insights

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

The PDF document contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The presence of multiple external URIs and link farms suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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://crewmak.ru/uplcv?utm_term=dorma+ed+100+service+manual PDF link annotation
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bacc9cc1c6c---fopipafevi.pdfIn PDF document text
    • http://healthywithhart.com/res/file/79908770323.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/49846241378.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/77953206557.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a462d93960b---21505922053.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/jupojogivezifo.pdfIn PDF document text
    • http://greenbrier101.com/userimages/zokepawu.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5b4a401dd---48712843937.pdfIn PDF document text
    • https://mk-promotions.com/ckfinder/userfiles/files/85267397508.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/43141995871.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/81580529532.pdfIn PDF document text
    • http://rayanchem.com/d/files/92388769932.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/54863184677.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/rurujufubifomexa.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609654f671fae---takemivolizupoxasi.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096971ff3501---53263693065.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/gegivominamogex.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/62079606576.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080b95901be9---vivesukupawojalewexik.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/gifolaminobab.pdfIn PDF document text
    • http://goldcoil.com/uploadfiles/files/40574665137.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/59dccc01398bb1f6cc02b9a4fd9b89a4/xafukegezudijoruzer.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/d17f31a9d2eb27da245e5c48111e3b9e/61873758659.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160dbf7f098266---78298598740.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16078866867dd9---watijamumidel.pdfIn PDF document text
    • http://www.vegagastro.pl/upload/file/jizug.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_off0000bf49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF49 16220 bytes
SHA-256: 92f471e143c9e560913826a834732f9065763233836ec3663f8d924a71ea8e81
font_01_sfnt_off0000e85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85C 10776 bytes
SHA-256: 4ce4ad7bfcb49cc793290a826c827619900f2ad301e1b5122550736188046662
font_02_sfnt_off0001012e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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