Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95e30c3716d0cdb…

MALICIOUS

PDF

161.2 KB Created: 2021-03-05 17:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12c476a2111644568c3dbf47d6f5a895 SHA-1: db354f9caf45a565e03945a26a363e5f749155c7 SHA-256: f95e30c3716d0cdb0164a96141d7b7da7ec8955d5b6ac38f39be687275d16f44
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL disguised as a movie trailer link. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, suggesting a phishing or malware distribution scheme. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9884

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://botokaw.ru/strik?utm_term=kung+fu+hustle+official+trailer PDF link annotation
    • https://puzileto.weebly.com/uploads/1/3/4/6/134674509/wimololadudifeg_tafukinogin_dewoxik.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/weber_grill_grates_cast_iron.pdfIn PDF document text
    • https://mijonuguvozu.weebly.com/uploads/1/3/1/8/131871478/77e13fdbfa6.pdfIn PDF document text
    • http://fesavuxofogegil.iblogger.org/17079167570.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/kogunavujim-pawoto.pdfIn PDF document text
    • https://wugizagopa.weebly.com/uploads/1/3/5/3/135311922/8947279.pdfIn PDF document text
    • https://vorexumezekadan.weebly.com/uploads/1/3/0/9/130969740/gulizesot-tujunakovug-goditusolok-denerabijirulup.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/luwekalogemop.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
    • http://silisawis.rf.gd/10000_reasons_lyrics_matt_redman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6dd1455-f223-42ee-b24d-a109144e3d01/31918421228.pdfIn PDF document text
    • http://wuzapulemukepux.epizy.com/adverb_clauses_of_time_exercises.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/zoom_h1n_vs_tascam_dr-07x.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/blast_furnace_guide_2007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9154ae9c-edf7-45bb-8b5a-335d25597c6c/world_map_printable_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/wadoxinivojuguderoru.pdfIn PDF document text
    • http://jibogifimot.epizy.com/94989021661.pdfIn PDF document text
    • http://kogejikez.epizy.com/drinks_menu_template_ai.pdfIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/9110848320.pdfIn PDF document text
    • http://xejolufu.epizy.com/40888715684.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/pajevuboke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/532d6228-b92a-4870-b346-7d50acc24664/podofo_7_android_car_radio_stereo.pdfIn PDF document text
    • http://taranijiburojod.rf.gd/lizipurezezemebalorimuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/crusader_crossword_answers.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/yard_machines_132cc_gas_lawn_mower_20-in.pdfIn PDF document text
    • http://lekinip.epizy.com/what_did_ancient_egyptian_farmers_do.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E37 38640 bytes
SHA-256: a5606ad2e8c0a4085ba9886e98b4023fb329514fa8a3e972490ea611e8ad5486
font_01_sfnt_off000214ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x214EC 4992 bytes
SHA-256: 81d503b91d4b4e0ecb1e22b834cde1ed2600d33d94ef476968f1780ccaf2da41
font_02_sfnt_off000225e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x225E6 13300 bytes
SHA-256: 67912a7c6cb96a7aa00b610b22a67a14b41a5fab0359b1f8aead8714bbbf0d4c
font_03_sfnt_off00025159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25159 16060 bytes
SHA-256: d26390a1b495fc4844790f49287189703365677ecb3af67b7cca25d146cf5ea9
font_04_sfnt_off000265ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x265EF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378