Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8d980aeba2d28f…

MALICIOUS

PDF

80.3 KB Created: 2021-03-08 23:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 8a8ce7fc0b3efc2871867ed55688a2b2 SHA-1: c920e361bdc41ea0cc9f6c5af7f93d9387f39998 SHA-256: 0b8d980aeba2d28f88467dd0bf09e7a61530db7a98da58f848ff0e939f0b7e27
192 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'negotiable instrument act 138', suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://yafferge.ru/strik?utm_term=what+is+negotiable+instrument+act+138 In PDF document text
    • http://sipipewawezizuf.getenjoyment.net/28536282052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5fd6c66141118.pdfIn PDF document text
    • http://favanitum.iblogger.org/how_to_use_phone_as_remote_for_samsung_smart_tv.pdfIn PDF document text
    • http://jazazopito.22web.org/79186307130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_60302a336709d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pedirite.onlinewebshop.net/pedopizujidobumuvibadupax.pdfIn PDF document text
    • http://gojuveri.rf.gd/small_a_b_c_d_worksheet.pdfIn PDF document text
    • http://tizerusop.rf.gd/baarish_song_bilal_saeed_mp4.pdfIn PDF document text
    • http://madigekole.onlinewebshop.net/12402381258.pdfIn PDF document text
    • http://ludilisi.epizy.com/mlp_cheese_sandwich_color_guide.pdfIn PDF document text
    • http://zepaxawom.rf.gd/59498082696.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_cadb607910754a6cbb6c7fc69500b04a.pdf?index=trueIn PDF document text
    • http://jilagikudi.rf.gd/fudapa.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_c55930ed5d664f40a16a77b46555a92e.pdf?index=trueIn PDF document text
    • http://joriboka.epizy.com/berufujegoxorel.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/votibubapudodoxonu.pdfIn PDF document text
    • http://tixelupaninaber.rf.gd/xukokaruleti.pdfIn PDF document text
    • http://kalilom.epizy.com/police_report_form_printable.pdfIn PDF document text
    • http://remigesej.epizy.com/redepofikutiro.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_off0000fab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB6 5776 bytes
SHA-256: d9f2465531e39ea8e3a090ccd71002f6bd39fdc83e46fecdd8be3b3b46159021
font_01_sfnt_off00010e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E4A 11092 bytes
SHA-256: 15a3a5420d21ba8cca89ecac24751a2108e84fb9d3bf8703f0f87fb02db4435e

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