Malicious PDF — malware analysis report

Static analysis result for SHA-256 957716cda5455dba…

MALICIOUS

PDF

76.6 KB Created: 2021-03-20 03:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c948a921e0e13898882ddcef0e911275 SHA-1: 63ef114ebb23e3e531ef9ba8eec0c515d20576f2 SHA-256: 957716cda5455dbac54efa3d640a54b14378e511b9a0f54b158b3fee587f2246
186 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 hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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://jumiwimov.ru/wix?keyword=westminster+road+runner+sports PDF link annotation
    • https://cdn.sqhk.co/fezozepefik/ChfjiGL/king_of_sails_ship_battle_mod_apk_obb.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/30467770350.pdfIn PDF document text
    • https://cdn.sqhk.co/xurajalijok/b3nRlzI/lebude.pdfIn PDF document text
    • https://nofitipofawotuj.weebly.com/uploads/1/3/4/0/134012335/6887958.pdfIn PDF document text
    • https://kekugijofer.weebly.com/uploads/1/3/5/3/135321092/830ab25.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/1jcMhaQ/bowusufepoxexudok.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/gd8Wngf/80314307278.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/DhiYdjP/pancake_art_challenge_kit.pdfIn PDF document text
    • http://liwugukikijosi.iblogger.org/fly_tying_bench_lamp.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/ludojijozazemosa.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/jdduiaA/rapido_luxo_campinas_campo_limpo_recarga.pdfIn PDF document text
    • http://vomimaforotagi.mywebcommunity.org/best_stock_watch_list_app.pdfIn PDF document text
    • https://bunuterujizid.weebly.com/uploads/1/3/4/8/134882333/loxodologa_pibixozu_nepufezatabowu_dogatofaw.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/ahgXVNc/candy_movie_2017_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/52jgjjh/xenimizuvavek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://situzuwopemol.rf.gd/13986887193.pdfIn PDF document text
    • http://pebomotixot.myartsonline.com/rpg_maker_vx_ace_dlc_free_download.pdfIn PDF document text
    • http://ronufoju.epizy.com/what_does_the_red_queen_symbolize.pdfIn PDF document text
    • http://runuvabono.rf.gd/55370837411.pdfIn PDF document text
    • http://lojanapijavavo.rf.gd/5113194957.pdfIn PDF document text
    • http://zefitog.epizy.com/poulan_pro_20_inch_chainsaw_chain_size.pdfIn PDF document text
    • http://sivadanoxibive.epizy.com/wimiwunapakizobonux.pdfIn PDF document text
    • http://masusekokuberex.rf.gd/72270560449.pdfIn PDF document text
    • http://toguxekedufu.epizy.com/diffusion_in_cells_worksheet_answers.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_off0000ede7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE7 5088 bytes
SHA-256: 39cb0807123e8f8c0f14d543848631e60cab3e66a6b46dd44d64e38385543019
font_01_sfnt_off0000ff22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 11248 bytes
SHA-256: 45f3ccbbea5510486de26620093d716e68da32325d495209890d619a37a6a506

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