Malicious PDF — malware analysis report

Static analysis result for SHA-256 789bd1f9f028abe9…

MALICIOUS

PDF

78.9 KB Created: 2021-02-17 21:53:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bfd8d5bd20ac33348f0031df1cef59ab SHA-1: 21c43b56062b4c476ff1c1bb3fc90e7460d8e21e SHA-256: 789bd1f9f028abe99bb8b141fce7dc3c089234c76dd4aba810359021b88ad4a7
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though partially corrupted, references "Zig ziglar sales books pdf", suggesting a lure to trick users into visiting malicious websites for purported content. No scripts were extracted, but the high number of suspicious URLs indicates a strong intent to redirect users to potentially harmful sites for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/strik?utm_term=zig+ziglar+sales+books+pdf PDF link annotation
    • http://fastcreditreport.info/free_virus_scan_for_android_tv_boxplweu.pdfIn PDF document text
    • http://tb-films.ru/rarufekajalilulomuxawul6rlpy.pdfIn PDF document text
    • http://bionatur.space/35529308723tvhgd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415935/normal_5ff258a7dce30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5feb958ddd89b.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/ia20rmU/deranefapadep.pdfIn PDF document text
    • http://zapazereti.22web.org/928019989.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489850/normal_5fe3a5a31eff3.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/p8zigig/57231102751.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/Qgc7d5s/free_read_along_books_for_first_graders.pdfIn PDF document text
    • https://cdn.sqhk.co/gabunufu/ajjj9hg/crypto_wallet_without_fees.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5fe7d5e8bcdbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479240/normal_5fdaad26e9efa.pdfIn PDF document text
    • http://3gusevshop.space/kindergarten_drawing_worksheetsx7tz8.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/hc7wGyr/3215438229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_60258253e5788.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468259/normal_5fe5f42475518.pdfIn PDF document text
    • http://torchqbfl.fun/la_biblia_de_barro_gratis895p3.pdfIn PDF document text
    • http://zojulosopejozaz.iblogger.org/xomugapujumarudevuxureva.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/jgqyKja/the_legacy_cabernet_sauvignon_2014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapejufujol.epizy.com/worship_house_project_7_album.pdfIn PDF document text
    • http://zezazemana.epizy.com/game_alita_battle_angel_mod.pdfIn PDF document text
    • http://zipoxibel.epizy.com/18249364129.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_off0000f753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 5420 bytes
SHA-256: dc90d8f8e9b3f0df3e17bd433eed062858f0b8afb9c658d805172973f81eb873
font_01_sfnt_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 10592 bytes
SHA-256: 2401d23f74bc200fa22738a7c30e87ff8736ea21b5e1a52c6f4975516268188c

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