Malicious PDF — malware analysis report

Static analysis result for SHA-256 41aa9b4c06d0308c…

MALICIOUS

PDF

75.2 KB Created: 2021-03-03 14:27:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb969b6b2047d205cfb41638bf6d3da4 SHA-1: 4cdb93cd3e8998526346eb130386271b6d04c5c7 SHA-256: 41aa9b4c06d0308c025a9a3dbbc055d20cbf7a6172b191944578284e9a8ac4f4
126 Risk Score

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://baarspo.ru/123?utm_term=how+much+does+the+harry+potter+cast+make PDF link annotation
    • http://kokolonesafu.getenjoyment.net/84219872548.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/piwenelasanoxusek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_60164bf36132b.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/weber_genesis_1000_cast_iron_grates.pdfIn PDF document text
    • http://tefotofunuwugan.iblogger.org/wawusorubawofezakebe.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvopone/Wjjjffz/chest_freezers_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/gabisolovima/h6sjfWt/lolitakewomusikabajoxaxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371247/normal_5fca04635081c.pdfIn PDF document text
    • https://cdn.sqhk.co/pimabosi/hdv11Xx/wezura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387703/normal_5ff948b928b3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zopoxasemegivo.epizy.com/human_digestive_system_short_answer.pdfIn PDF document text
    • http://suvubojetixag.epizy.com/7836890579.pdfIn PDF document text
    • http://vedaremix.epizy.com/74294801064.pdfIn PDF document text
    • http://jatomije.rf.gd/create_flowchart_online_and.pdfIn PDF document text
    • http://saninov.epizy.com/fanusarareparixibizos.pdfIn PDF document text
    • http://xakosafejel.epizy.com/arab_health_post_show_report.pdfIn PDF document text
    • http://xezigogologivam.rf.gd/35302820827.pdfIn PDF document text
    • http://joriboka.epizy.com/lirirokedotano.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_off0000e981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE981 5500 bytes
SHA-256: 3fad8501cb554477e6b3d1f565571801e3ec5b00fe759492aea6bfa1ec4e208a
font_01_sfnt_off0000fc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1E 10560 bytes
SHA-256: 2d19a766b6063b5c32b60e0d7b84e155b00d7c492d76f844c6f8ce7c399deabf