Malicious PDF — malware analysis report

Static analysis result for SHA-256 345e1d7e0f7a3a3f…

MALICIOUS

PDF

63.5 KB Created: 2021-02-28 02:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 15033826c2744d48fcaa6e39041088ac SHA-1: 84f542e3219df787b9620a6420d7e91a06d395dd SHA-256: 345e1d7e0f7a3a3f33e084c3fb71a0eaf70a370173157384b46bf9a0f5983610
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are configured with UTM parameters, indicating a phishing or malware distribution campaign. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further supports this, identifying the PDF as a link farm on disposable hosting. While no scripts were explicitly extracted, the nature of the embedded URLs and the ML classification suggest malicious intent, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9263

Heuristics 4

  • 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
  • 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://pelibifir.ru/strik?utm_term=the+unfettered+mind+audiobook PDF link annotation
    • http://freedate18.xyz/canada_s_best_mattress_platform_bed8awje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390051/normal_5ff65c0e3726b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393647/normal_600470400c3a1.pdfIn PDF document text
    • https://duxudalo.weebly.com/uploads/1/3/4/8/134866109/zorulununugutewip.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/gehiO4t/8612320126.pdfIn PDF document text
    • http://idealica-tufficiale.website/deer_hunting_19akhop3.pdfIn PDF document text
    • https://cdn.sqhk.co/ragebobeb/aggGjdc/blood_pressure_medications_with_least_side_effects_2018.pdfIn PDF document text
    • https://nurufumetexode.weebly.com/uploads/1/3/5/3/135323779/mifewekusanesi-wakiwuwisukeri-sarozakaxowibed.pdfIn PDF document text
    • http://keto-s1.com/best_android_weather_app_uk_2019tqr8s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376374/normal_5ff1112be609c.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/hejigd1/tafijofolisuzuvirewi.pdfIn PDF document text
    • https://nurosizakudagag.weebly.com/uploads/1/3/4/6/134699554/matitikubuv_nugokefon_wapuzeponikan.pdfIn PDF document text
    • http://hq-cleartv.info/best_books_for_html_and_css_beginnersm0fgd.pdfIn PDF document text
    • https://pufodafu.weebly.com/uploads/1/3/5/9/135959320/xilifewinugesi_falamaxivaw_sularum.pdfIn PDF document text
    • https://cdn.sqhk.co/pefapalotux/iBihdje/sodenu.pdfIn PDF document text
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/44d52a5bc0cf4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jaremov.rf.gd/nomitupikaguwef.pdfIn PDF document text
    • http://bolizubixekop.rf.gd/51889299788.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/fossil_q_explorist.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/xizasipikonivoronanidak.pdfIn PDF document text
    • http://kifepaba.epizy.com/sisokine.pdfIn PDF document text
    • http://kazowive.epizy.com/78135005089.pdfIn PDF document text
    • http://zugujegezamuto.epizy.com/vscode_python_format_on_save.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD518 5092 bytes
SHA-256: ee467f26aa608197c3b57551dc6b90a906d4c3f15442d9ac1c87094c2919ddd1

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