Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de209a59b1bc3b5…

MALICIOUS

PDF

70.7 KB Created: 2021-03-08 12:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b9bd63716fda0fbb7dc363e3cc2f8ddc SHA-1: f7f06e9fc1609190c306564225710368a4078f9b SHA-256: 4de209a59b1bc3b586166b8803e0b8b8b743f45786ede4693aafdd6be3093e5b
126 Risk Score

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://kuzutuzo.ru/strik?utm_term=bose+321+series+ii+remote+control PDF link annotation
    • http://golden-bridge.pro/what_is_curriculum_in_education_slideshareu9b3x.pdfIn PDF document text
    • http://matteset-spon.space/in_my_life_sheet_music_les_mis_freendh44.pdfIn PDF document text
    • http://teksalle.xyz/wozenis1hcjh.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/ihjGtfo/huawei_health_app_ios_update.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/hcjbicm/lasafugit.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/eijhc7r/monkey_balls_drink.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/bihJhfM/puzzle_bobble_3_game_download.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/bagisi/harvest_moon_switch_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/18314788635.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/94101109581.pdfIn PDF document text
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_746e3a0f23184ae68ff626ad6593a971.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c6e411a-2ede-41fc-8fbc-fd7f704e5448/5_types_of_love_languages.pdfIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_2f2035fe45e54a7992760f9971dbc940.pdf?index=trueIn PDF document text
    • https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_b7d390bae1994527bfed5726bedf6334.pdf?index=trueIn PDF document text
    • https://4cd5a77a-be8d-44ba-8952-4177873115c4.filesusr.com/ugd/930050_9f50c09c52a94dffbdc9351da793e9ef.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c1d30fa-394a-44b7-bde1-1c3a364cd71d/kunowafuwedotiw.pdfIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_81018018a52c4aa39b65a1e85b4a78ad.pdf?index=trueIn PDF document text
    • https://e1bd05e7-a2ed-43df-b5fc-9bc8ee0b1a84.filesusr.com/ugd/08acf3_a908c4d7a2704b2786431c48ba17e49e.pdf?index=trueIn 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_off0000d843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD843 5132 bytes
SHA-256: a226ecf53e89cdf4fd6d3746583ed0ade10b0a160c990cd898ac361caa2b846a
font_01_sfnt_off0000e9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AB 10560 bytes
SHA-256: ae4956aa2f72d9d9af9c7022154ce1512e4385a395a161d84b5ba9d2f944a5db

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