Malicious PDF — malware analysis report

Static analysis result for SHA-256 004741deb9abd37f…

MALICIOUS

PDF

77.6 KB Created: 2021-05-12 07:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 95766a062496630778d9bfd79ca4e720 SHA-1: 69a5f3d06fc18b4a9f0c30552ba61ea93675a881 SHA-256: 004741deb9abd37ff7ef1a69f4b9f9ed073f7412d0905a76df84f455b34bc5ef
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with one prominently featuring a "utm_term" parameter suggesting a phishing or scam lure related to a "Eureka central vacuum not working". The heuristic "PDF_SEO_DISPOSABLE_LINK_FARM" indicates a large number of links pointing to disposable hosting, further supporting a malicious intent. Although no scripts were explicitly extracted, the presence of numerous external URIs and the ML classifier's high confidence score suggest this PDF is designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=eureka+central+vacuum+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464302/normal_602e32729f724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482636/normal_60292d4264f0a.pdfIn PDF document text
    • http://kovamuwaropepu.getenjoyment.net/principle_of_density_gradient_centrifugation.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/u5ghhiS/57188327839.pdfIn PDF document text
    • http://salonop.xyz/sig_sauer_p320_x_compact_vs_glock_19_gen_5jhzwk.pdfIn PDF document text
    • https://cdn.sqhk.co/zupivikeg/gcgehhN/fashion_beauty_sv.pdfIn PDF document text
    • https://cdn.sqhk.co/wukatigubo/ii3K1Jd/fajedebevasuv.pdfIn PDF document text
    • http://maska-respirator.com/timofosepamejedodifokihgjm2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_606619ef43758.pdfIn PDF document text
    • http://kafikupalukali.22web.org/brendan_gregg_book.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/hhCn4z5/shooting_in_kingston_jamaica_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444885/normal_6057c4405ad94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_603f1a2d745d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raxitipigatar.epizy.com/38012943187.pdfIn PDF document text
    • http://sujotoginejo.rf.gd/b._com_2nd_year_books.pdfIn PDF document text
    • http://gomugugagaf.onlinewebshop.net/jejevurezirozisafi.pdfIn PDF document text
    • http://kegaregajisojas.rf.gd/shop_vac_replacement_hose_1.25.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_off0000f2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CF 5112 bytes
SHA-256: e91609aaaa936c50cf360df5781313738169d3062824473ad2863542338e1840
font_01_sfnt_off0001043e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043E 10924 bytes
SHA-256: 1603433df99e67b1e21c20b8f89f2ff45cd8663d2856ffbcf26ad87b284d50fa

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