Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc129e350b9b1820…

MALICIOUS

PDF

96.7 KB Created: 2021-04-02 20:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d2357a33403e82ad993811742352f79 SHA-1: 5838e2fb1b624ed102e9f07c0a74171a32906944 SHA-256: cc129e350b9b18206bbbcf7013ea9a526756c50fb0442045103f3e12351e9502
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the nature of the link farm suggests the document is designed to redirect users to potentially malicious sites, possibly for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/wix?keyword=chris+ware+jimmy+corrigan+pdf
    • http://wagagawoduzom.iblogger.org/lubimixinuma.pdf
    • https://cdn.sqhk.co/nuzitomizaj/hihheS8/troll_face_quest_video_games_2_level_20.pdf
    • https://cdn.sqhk.co/vovomafejuwa/gIWjizG/totakasuvokiguwirivifigum.pdf
    • https://zulupilasafa.weebly.com/uploads/1/3/1/1/131164294/dd5599f67f6a1.pdf
    • http://rezanufeku.mygamesonline.org/1493624601.pdf
    • http://zahlungsservice-ch.site/cyberpunk_2077_v_1.04_patch_notesrtbee.pdf
    • https://cdn.sqhk.co/savunowudob/jgcihS2/gajoxozasafurinaj.pdf
    • https://cdn.sqhk.co/bomoxale/c6pjbTe/pacxon_game_unblocked.pdf
    • http://vulewonatetil.22web.org/70340598995.pdf
    • https://cdn.sqhk.co/jukelifawap/wggfFUK/gurukul_defence_academy_in_sikar.pdf
    • https://cdn.sqhk.co/soxuvezosapa/idjjdgx/ritolisobofakobopekafebo.pdf
    • http://circulyarkadigital.xyz/history_of_new_york_media_careersgwtri.pdf
    • http://jufidozotazi.66ghz.com/best_job_application_letter_format.pdf
    • http://kijumubafenu.mypressonline.com/36867846991.pdf
    • http://nakidki-alkantara.xyz/formal_dresses_trends_2019kg00l.pdf
    • http://babubusawase.22web.org/nujeweporimimamuned.pdf
    • https://cdn.sqhk.co/sotatixorawi/idZjfhb/filling_drill_holes_in_concrete_slab.pdf
    • https://nenafefetu.weebly.com/uploads/1/3/1/4/131406263/6436900.pdf
    • http://indital.space/scrabble_word_search_cheatxtfpf.pdf
    • https://cdn.sqhk.co/givefugonuw/gnphgfo/ravuzulejokesun.pdf
    • https://cdn.sqhk.co/gowalitusiwa/ejgmIhj/template_for_glinda_the_good_witch_crown.pdf
    • http://qqkaxes.xyz/99956455957lhdkt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vesedakowata.onlinewebshop.net/87815125931.pdf
    • http://bototiluwoge.atwebpages.com/45319451147.pdf
    • http://kiluwemejibe.rf.gd/97196088712.pdf
    • http://jabodegodonirad.atwebpages.com/billyoh_playhouse_assembly_instructions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013cc0.bin
a785092b5833b6f189d407ec8df3bb8fa3ddab7709457403429160884dd95079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC0 5712 bytes
font_01_sfnt_off0001501d.bin
9547597fa5704c2bdf1a944159bb53689d5ab2c8d7e6316836af2092e221fcf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1501D 10924 bytes

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