Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec6de6163628cb8…

MALICIOUS

PDF

84.0 KB Created: 2021-06-14 14:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 6d50c417529b0e4ef86b0c36e14e0ad5 SHA-1: 678b401553174f2874d8a5bc8ac7a0792804da69 SHA-256: 5ec6de6163628cb8332ff204fd88036ef5a93cb4a2fca9e07d3d53959972afac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of 'unlimited money pixel car racer' in a URL parameter hints at a lure to entice users to click on these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=unlimited+money+pixel+car+racer PDF link annotation
    • https://oumkua.com/userfiles/file/womopesapajizid.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ujidkhpugch0fclncm0a7rusm3/44078613062.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081ef93742c1---3417509529.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbf6922917---mofibelamav.pdfIn PDF document text
    • https://cargotavio.ru/files/file/wajepobujivovefi.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160858502359ae---60612412675.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/1t8bsuh7l23m599tqsqkq06pt4/juvamilobuj.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/b7769f9efa2d002ff7769ffc123e5509/22717978764.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/rouu87c78t5o2pkn7piq28os72/39190212338.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/ipsa7f5v3pfe11v3flf8fn3d42/51324659611.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/78832820628.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a68ab6c6125---funewiteri.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/h4cahge0ckhdvg4gd5m92ogoo7/zuvagemogejilorufepajekor.pdfIn PDF document text
    • https://biocoils.com/img/file/rigimubidemajuwomedol.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/rikaxajivaxa.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074798eddcd7---sanifirepibofikixupu.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/k0kehch71ful5egq3ui12kebta/tadubupudig.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2ccc4bcc6---diwonalutoburosi.pdfIn PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/828faafbd3c6a49e88d63e7e2b551834/84127161881.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EB 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000fe29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE29 4988 bytes
SHA-256: 4b47965646723e71a622617cdc3bda5c5c06ed494480a01fe601084a3bdf29bb
font_02_sfnt_off00010f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F04 10856 bytes
SHA-256: 9cf2e947bed9b76d236723682d0016856d105992897216464ce15c84fab74feb
font_03_sfnt_off00013434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13434 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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