Malicious PDF — malware analysis report

Static analysis result for SHA-256 1563da73767aba44…

MALICIOUS

PDF

75.7 KB Created: 2021-01-18 17:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5fd9d942834eb0c334fb2911d25e56b SHA-1: 7191893eb6d36af47def572b5eac1e5aa1fbf7b9 SHA-256: 1563da73767aba4452a90a8daf3af2138a1192dd701cef641e5237306ca5911d
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous external links, suggesting it's part of a link farm designed to distribute malicious content or phish users. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/aws?utm_term=adventure+communist+cheat+apk
    • https://cdn.sqhk.co/pelotuwew/lphcxBH/mcgregor_ufc_news.pdf
    • https://cdn.sqhk.co/fevivesuxofo/2ic4jiR/serie_a_top_scorer_19_20_season.pdf
    • https://site-1176357.mozfiles.com/files/1176357/fosedewufabuwi.pdf
    • https://site-1200539.mozfiles.com/files/1200539/baar_baar_dekho_movie_filmyzilla.pdf
    • https://cdn.sqhk.co/lebuwoxetale/gFn9Tgj/business_management_jobs_melbourne.pdf
    • https://zotadipijipas.weebly.com/uploads/1/3/4/4/134467791/e3a0b64.pdf
    • https://xewoweduvaji.weebly.com/uploads/1/3/4/6/134680405/kiserumomuki_kafukikaribidad_tijofo.pdf
    • https://site-1176351.mozfiles.com/files/1176351/67481547374.pdf
    • https://cdn.sqhk.co/pevizopubok/fznbhe7/buniwulim.pdf
    • https://cdn.sqhk.co/lebogomatoze/7iiWjeh/helicopter_flying_simulator_car_driving_mod_apk.pdf
    • https://site-1177462.mozfiles.com/files/1177462/forojetevavoli.pdf
    • https://cdn.sqhk.co/xejudawadoni/ehThi5h/73596775566.pdf
    • https://site-1174259.mozfiles.com/files/1174259/anguille_sous_roche_ali_zamir.pdf
    • http://sizijevoji.iblogger.org/17783896247.pdf
    • https://jivezevovofefav.weebly.com/uploads/1/3/4/8/134896957/9602245.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zakuvusebaj.epizy.com/akira_full_movie_tamil.pdf
    • http://vekamujibatebig.rf.gd/typography_terms_cheat_sheet.pdf
    • http://xuxusemo.epizy.com/google_docs_sheets_and_slides_apk.pdf
    • http://ruxofepugoloma.rf.gd/multiplying_monomials_and_polynomials.pdf
    • http://fepoxojosatomu.epizy.com/koniki.pdf
    • http://fufinekudag.epizy.com/77821695639.pdf
    • http://litufowanukoro.epizy.com/subtenant_contract_template_uk.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_off0000eb8d.bin
e0476d7271234fd49e79879d845403f8e954866405fcd714d915cbca09173a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 5396 bytes
font_01_sfnt_off0000fdc0.bin
33f98199bc709ab021699f44fcc2c60e79891447936680792770c54f09e9be2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC0 10508 bytes

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