Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bda1d10f270fb4…

MALICIOUS

PDF

65.6 KB Created: 2021-03-29 13:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 841ec6fd07714445383f9b7090f8eaf4 SHA-1: e3096b09ab40581e6c4dcd37cce7d2a945aa7a30 SHA-256: 95bda1d10f270fb472f9d18af183ea5e0c36a76bb1db5cdc40053c9ccc606fee
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that are flagged as malicious redirectors. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be part of a lure, possibly related to the 'Beden dili kutsal kitabi judi james pdf' text, directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • 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://crophysi.ru/award?keyword=beden+dili+kutsal+kitab%25C4%25B1+judi+james+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5fefb145bc44d.pdfIn PDF document text
    • http://freefire-gifts.com/jazamogejarukesu6wak4.pdfIn PDF document text
    • http://verification-help.com/tijurekuladorujoloravuppcgh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_6038d71638635.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/who_manufactures_danby_freezers.pdfIn PDF document text
    • http://vorakumezaxof.mygamesonline.org/introduction_to_advertising_noun.pdfIn PDF document text
    • http://allerlo.xyz/how_to_replace_battery_cateye_strada_wirelessggyqt.pdfIn PDF document text
    • http://summer-italy.fun/sonic_small_peach_slush_calories26xb5.pdfIn PDF document text
    • http://mxbur.fun/bexeppjidz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5fe6cd2b1bf17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382413/normal_5fd07c6eb5757.pdfIn PDF document text
    • http://card2card.live/59079489837sgqt9.pdfIn PDF document text
    • http://opensol.xyz/local_area_network_example82qwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477916/normal_5fcaee97b7bde.pdfIn PDF document text
    • http://kuboduzuke.mypressonline.com/madame_butterfly_opera_story.pdfIn PDF document text
    • http://virnet77.ru/wawaloxujimulova0t7qq.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/epson_v370_perfection_flatbed_scanner_argos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/verusebamemodux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4407a492-385c-40b4-ac0b-a36c177746e9/where_does_eragon_go_at_the_end_of_inheritance.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/93365108375.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/46291218164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5aacad1-e5ae-4d2f-b665-492e05c45c63/pixepuzurinemoxapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/172acdd7-54fd-4ef8-8376-d5e44c3cc356/risd_spring_break.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee409e6-b29e-4b72-afa5-295fc5f13510/22754392736.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/surodig.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_off0000c380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC380 5452 bytes
SHA-256: 471cf85ce289af95a4f33f3c504fd2cf6d79a5adc43a59a160aa2d2dfe96baa4
font_01_sfnt_off0000d601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD601 9992 bytes
SHA-256: 0ee9e9b91cce54bf5c2448920ee0479ad119877d6aef8de59ad335db8d5246a2