Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a6c60f1c3a3ab8…

MALICIOUS

PDF

69.5 KB Created: 2021-03-19 19:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ac70703daf69608c346dadd2bde8c762 SHA-1: edfc4b6c92d5280b00730ffd994b6723c7bacd4a SHA-256: 30a6c60f1c3a3ab889de9d0902b3a4f7645cba06ba5d81dc22342e14fb62aac9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=channel+12+long+island+weather+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366007/normal_6032e7a2afe65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456984/normal_6024a6d6d18b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376372/normal_6001fe0af0aa6.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/ieaFhev/football_cleats_vs_soccer_cleats.pdfIn PDF document text
    • http://giwitijudaleka.mygamesonline.org/jazopuwimubawodebexoxoza.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/englander_13_nc_wood_stove_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427799/normal_6051aba2bddf5.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/Iuiic8j/bang_bang_bang_korean_song_lyrics.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/how_to_prepare_for_law_school_philippines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452171/normal_5ffe42d86e459.pdfIn PDF document text
    • https://cdn.sqhk.co/zelosoza/Kidji8x/25045857800.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/ihHhfZ0/28418846564.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/pdf_converter_cometdocs.pdfIn PDF document text
    • https://cdn.sqhk.co/rumomezojeku/ijdiahd/3415949600.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/djeKhbu/87351559584.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416659/normal_600240fb0ba64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_6008fb9320125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/66151598713.pdfIn PDF document text
    • http://kuwijiti.myartsonline.com/69157877344.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/18795229627.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFA 5404 bytes
SHA-256: 07ad74c6dbb599f0020a77bac039a0008fbc1de08d10f9b41df179f8adc1c637
font_01_sfnt_off0000e26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26A 10600 bytes
SHA-256: c7dd54b7ff99e9bfba9a442d66ac090493628e839d52fac62b25338e52f83d7a

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