Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc62a9be262cce5…

MALICIOUS

PDF

104.8 KB Created: 2021-03-04 05:47:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: f583b5231fd0eab879f34d83af597bd6 SHA-1: 505ca2e5c4067e07bd2c1e2250a9870428aee990 SHA-256: 0fc62a9be262cce59da8ebccd448a2831550915ac2e93ddad05045e48ef9e493
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'dugedepap.ru', suggesting a phishing or malware distribution lure. The PDF's structure and the presence of external URIs indicate it's designed to redirect users to potentially harmful content.

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://dugedepap.ru/123?utm_term=erikson%2527s+stages+of+development+chart+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460950/normal_600d0ee659b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464327/normal_6026197ce7513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389582/normal_5fd67ead0de85.pdfIn PDF document text
    • http://zubiki.top/530479548447ld5z.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/hflhewU/field_hockey_pub_quiz_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/N2hgics/86309153848.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/gapugi.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/kekaxipawakej.pdfIn PDF document text
    • http://creditscorerepair.info/samsung_c27f390_remove_standubaii.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402501/normal_5fd254e148e33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zifawikixeliba.epizy.com/gangplank_tobias_fate_guide.pdfIn PDF document text
    • http://dagapevas.rf.gd/botidamozigopogizipifop.pdfIn PDF document text
    • http://benamow.myartsonline.com/3378681708.pdfIn PDF document text
    • http://josatagosovux.rf.gd/rosalu.pdfIn PDF document text
    • http://vezabixu.rf.gd/8701350200.pdfIn PDF document text
    • http://magepatozof.epizy.com/how_to_get_through_tail_cave_in_links_awakening.pdfIn PDF document text
    • http://jogosefuvevol.epizy.com/vojapezidefadifu.pdfIn PDF document text
    • http://xetatiwu.rf.gd/9977284208.pdfIn PDF document text
    • http://zorijofoxafa.epizy.com/47001041533.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_off00015b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B5C 5684 bytes
SHA-256: 956ecb1f198a23ef916af291c0ad523eb7288ba6a530386c1bdc6eebe769b795
font_01_sfnt_off00016ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EA2 11236 bytes
SHA-256: c96c79cefa49ec2baa1548952481ac35fbc74237474397e5d6bc4592789d30da

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