Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ae70e68f4b7c22…

MALICIOUS

PDF

72.4 KB Created: 2021-05-29 06:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 90be3f254026ddca1cb21d53bd59661c SHA-1: 8ac605c759e2034ca33ab4548751c7f841dc6933 SHA-256: 60ae70e68f4b7c220bccf23617ca8d4bf68a7d6b3cce58aba402ecafca5a5aaf
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. It contains multiple links, many pointing to compromised WordPress sites, and one primary URL that appears to be a lure for downloading an application. The document body, though heavily obfuscated, contains text related to game mods and application downloads, reinforcing the phishing and malware distribution intent. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=criminal+case+save+the+world+mod+apk+unlimited+money+%2526+cash+%2526+stars+%2526+hunt PDF link annotation
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/c268e6f523a70b4c2e433ff967074b7b/86290064934.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/130562d723ee2d20fa846f90b95a8f70/vomelotigosefojiw.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a088f3f519---13162343696.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/398249371d8392beaa14922f017e70cc/27102457239.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021051707502999.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d2e207416---fevix.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/7824f34bba7b39c4a41a523e29418dd7/47926476203.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/91470120902.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160831a6dc974b---34000087277.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/glmm2cs0d2njmnsgc9m7go06f3/gumusukuganolilowu.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/pssh7s14psv2aqm5tfke025vo3/lekanovirovolabimej.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/5l0e7lksiou9be9aknrriag3c6/22750679233.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/kidunanegolovenovopilize.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC30 5536 bytes
SHA-256: 1259e46635439b483f1ff115de060fd2d270c8a67f36b7f7171c45f9b1899419
font_01_sfnt_off0000eee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE8 11084 bytes
SHA-256: 51359c00a3697920f3520f1065f85c9f1a3fc328e8f2facfdfd70a44a1a32453