Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0182efecb71faa…

MALICIOUS

PDF

77.1 KB Created: 2021-06-30 01:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e0496a9bd777580026ad625c9ebda178 SHA-1: a48202eca246b0027b7acee722844c18fafd98a5 SHA-256: de0182efecb71faac50262bb55124981b927f928e1a1cbe3d56b854a99a76a7b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other domains, likely serving as a distribution point for phishing or malware. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://irlanc.ru/uplcv?utm_term=chemistry+book+of+class+11+pdf
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/d3c7672163e5b52c8ae40d856c673c67/5112318085.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/p84l2e62n0dggunn9inplesncu/tamixekamesabesipa.pdf
    • https://ajitcoatings.com/uploads/jabizolitojodokatewuvili.pdf
    • http://e-hane.com/files/72248888108.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0d35f33d2---86564884308.pdf
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/d76d9febd4049269bc39f253970b4983/74304882938.pdf
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/6f32d4a3db832f1bbd75adc47ad9a9d2/tiwaxemoximuzikujitajiv.pdf
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/uu5us051joi9etpqosq5vlssvq/wifosaramizenonu.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160bc21c74ac8c---gomipotasixaronezejovo.pdf
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/a9qjv4gu9s9cgt2atnhep24ee3/neduxamagolebadopiloredo.pdf
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/1cs4bu2at1fapmpkmgks20ktch/78635025833.pdf
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/ae009d7125af3207ffe82d367c7fa714/62731476615.pdf
    • http://cameralehiep.com/hinhanh_fckeditor/file/56120874272.pdf
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f387648556---17471996258.pdf
    • 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_off0000c6e1.bin
5495cb9fbb817f829d20fc0d9c425ef46bd0cdc3ed04eed2c3f8317966d66b6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E1 11208 bytes
font_01_sfnt_off0000e106.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE106 16792 bytes
font_02_sfnt_off0000f918.bin
6f8cf72a9f9a127c9c27b8819e680d0db47d3999c2a828d97e7d5a6c9bc3a370		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF918 17224 bytes

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