Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede561b7e4fce24f…

MALICIOUS

PDF

83.4 KB Created: 2021-03-23 18:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0132655bc7b28bddc388f6675d671da1 SHA-1: 5f8c74495627bdbf9d324fe491327a9b6009a41d SHA-256: ede561b7e4fce24f0a8d2ab757ffae23b67e610a92c83188c6d60e6d06326b71
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on disposable domains or link farms, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards an attempt to exploit users by directing them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/strik?utm_term=what+is+the+best+flexbrew+coffee+maker PDF link annotation
    • https://kofavuzaxo.weebly.com/uploads/1/3/0/8/130873868/xomeder.pdfIn PDF document text
    • https://divaruwidis.weebly.com/uploads/1/3/4/0/134042650/guranixu.pdfIn PDF document text
    • https://cdn.sqhk.co/wefenosefob/ahbkUuU/happy_wheels_download_steam.pdfIn PDF document text
    • https://fademorojotuk.weebly.com/uploads/1/3/1/3/131379253/suxalodakagapupav.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/ijehchi/sony_rewards_mobile_app.pdfIn PDF document text
    • https://cdn.sqhk.co/nomevagume/OIgiGUT/ralphs_hours_san_diego.pdfIn PDF document text
    • https://jajelawipazug.weebly.com/uploads/1/3/0/7/130739535/5af9a1fdfe6d4.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/hi2jchj/update_phones_software.pdfIn PDF document text
    • https://felonuwonab.weebly.com/uploads/1/3/0/8/130814100/gakegenimima-fopapozoboweg-vitenita.pdfIn PDF document text
    • http://zesajiwokasopaj.22web.org/bardon_practice_of_magical_evocation.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/gebofexu_woribudolo_zuwiti_xoladajuxebig.pdfIn PDF document text
    • https://vexigijetizi.weebly.com/uploads/1/3/4/7/134771524/muviruvused.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/ccd4ae1351ecd8.pdfIn PDF document text
    • https://dedopaka.weebly.com/uploads/1/3/4/4/134498192/vusetuzere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fejakixoweka/wilderness_god_wars_dungeon_guide.pdfIn PDF document text
    • http://mutunibe.rf.gd/sneakerdog_s_phases_of_mitosis_worksheet.pdfIn PDF document text
    • http://wipevamejajevim.rf.gd/calendario_mayo_2020_chile.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/gotadozu.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/android_cardview_elevation_pre_lollipop.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/mbmbam_yahoo_answers_list.pdfIn PDF document text
    • http://wotalajo.epizy.com/caustic_3_sound_packs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/best_patterns_for_day_trading.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D5 5180 bytes
SHA-256: 88ea08d09c1874e8ed5dcc82ce3966cd3936bce2ec5cae88bb802be109d6a48f
font_01_sfnt_off00010b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B86 10728 bytes
SHA-256: 195656470ebcc0200e9b7043b6c03005e91d94690ccc7e15eef1267b0015f3bb
font_02_sfnt_off00012ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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