Malicious PDF — malware analysis report

Static analysis result for SHA-256 084c7e8509731174…

MALICIOUS

PDF

72.9 KB Created: 2021-02-24 10:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0759f7bdb4f84a4bd0330651a333fb9f SHA-1: 3d80fc1ca86f83a9585b8312ed50e1e5cbd1ac3f SHA-256: 084c7e8509731174a7ce4efee86272598cd78a7ef7cc4224fe1cc78b6f2b2ad1
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=conceptos+e+importancia+de+la+calidad+control+estadistico In PDF document text
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/xugalitewefow_sefuzovaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373016/normal_6016df6b870a4.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/malebodenaxunud-mirijetuligox-volinisanirabe-xegiwarugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_6028a8890ba39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529149/normal_60295dc1863c3.pdfIn PDF document text
    • http://goloszauniver.fun/sidezafugisezobhhu3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_5fcc277d1a2c6.pdfIn PDF document text
    • http://theraisins.pro/area_and_perimeter_of_composite_shapes_worksheetjs12e.pdfIn PDF document text
    • http://milanbeach.fun/juwulojop8dv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467936/normal_601b568a89c78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407996/normal_5fe23fdec20a2.pdfIn PDF document text
    • https://bemagage.weebly.com/uploads/1/3/4/5/134525224/fobesovo-wesijupopavi-metisulot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452865/normal_5fdb1af2a51aa.pdfIn PDF document text
    • http://lnstagramsecurity.net/the_options_playbook_brian_overby_freenzqru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451755/normal_6031b3ed65509.pdfIn PDF document text
    • http://fitnesspack.net/ciabatta_bread_nutrition_informationl7ocm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xajokaxakubif.rf.gd/9218832612.pdfIn PDF document text
    • http://rofivotika.rf.gd/akg_y500_wireless_headphones_manual.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/modular_belt_conveyor_design.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_off0000dd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD66 5124 bytes
SHA-256: 1ab6615a07c7c4ddcc7d15d4b7354446d9d2bb80ca133245607d151d4697e32e
font_01_sfnt_off0000eeb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB0 11660 bytes
SHA-256: 3bb1c90ccd5839954fcce7a9cb70a08fbf031731367272a252bcd0cdb367b6fd

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