Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02dab9b2261904a…

MALICIOUS

PDF

86.9 KB Created: 2021-07-01 11:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ec0eae3cca6fec7b34619dd712d792fd SHA-1: d496ee74f6f45ce1e5a80f5489d0c60cbe1cee3d SHA-256: f02dab9b2261904a6d438c935a6e1d94bdaf83e749ad6fb26200f477d3b23988
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a likely phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://coretry.ru/uplcv?utm_term=the+talented+mr+ripley+parents+guide
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a3e6805ed---pavere.pdf
    • https://ystechpro.com/nbloom/fckuploads/file/vebivifisabej.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a8c77f622---serikabixobofubokip.pdf
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/6d9dc879b76a2492f823600dceb64061/2462380127.pdf
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/1e1d1a153e36227f4e9c8f168a9a7ef1/xubipawexulututuvujeb.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/9aa51b07b35bff75dcf3c62cef8ec123/43169124493.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cc26fd4f44f---letiwelivezisomodujofo.pdf
    • http://elitaliaweb.it/upload/file/nopivexisinubep.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3895385d8b---65691552942.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c1776a384dd---nikerolelo.pdf
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/e67d6ceaa28ff141d7c65818204b4a7d/juranij.pdf
    • https://gute-reise.ru/i/files/files/selomanajuwiginu.pdf
    • https://copab.tn/216mag.svn/uploads/files/36107793953.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/dpfe61ecp1fa3m11ge82c8o81g/sonaxagizupoj.pdf
    • http://xn--d1achljw0b.xn--p1ai/content/upload/bijimowezuwifidujuru.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/f77e51d1943c17df22ebba900e266a39/bofabazexunusomute.pdf
    • http://merrygoldholidays.com/ckfinder/userfiles/files/41040740416.pdf
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/f8n6o026oavmt5a41iicgqd468/zononuwelizarunexet.pdf
    • https://argumentua.com/i/file/96898614979.pdf
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/u8beab99821rl6c365pbmunha3/bitepibenefibuwob.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c3613719e---91137750948.pdf
    • http://benhvienlaptop.biz/userfiles/file/wozol.pdf
    • https://fourseasons.events/wp-content/plugins/super-forms/uploads/php/files/66949e20c758e3370648ce3acbcf0023/15355239149.pdf
    • http://webinaris.biz/ckfinder/userfiles/publics/files/31361539003.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160904d4ded173---24688293899.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_off0000f20e.bin
350d1e8ebb831881c041427eb51ce80b950b534db7ea7fe6cc2a681a728e8f9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF20E 10896 bytes
font_01_sfnt_off00010ad5.bin
bed4cbb949cf8917d253739260736e3681a31a6b5eff31eae867b29835321262
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD5 16184 bytes
font_02_sfnt_off00013488.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13488 16792 bytes