Malicious PDF — malware analysis report

Static analysis result for SHA-256 244efd7e106d20b1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-18 14:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d9ecdd21a915875071533d9d021b11b7 SHA-1: ddcadf0022e621138f3693f601009cfdf47aeda1 SHA-256: 244efd7e106d20b18e610b96484cd5506ceac5b54ddbe7823ff7b5adf62a9ab2
184 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
  • 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 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=cyclone+lyrics+bruce+hornsby In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415767/normal_6017a30a0fba9.pdfIn PDF document text
    • http://sesulup.iblogger.org/71902575336.pdfIn PDF document text
    • http://tedesuvukifa.iblogger.org/jelupugi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368488/normal_5fe599d23d36d.pdfIn PDF document text
    • https://wiguvebilef.weebly.com/uploads/1/3/5/3/135389097/donodewisumabo-wapeben-revazapuwariwem.pdfIn PDF document text
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/3ba8ce1abc2b47f.pdfIn PDF document text
    • http://freshka.fun/22809860591rjqwz.pdfIn PDF document text
    • http://vejobazure.22web.org/pobifaloxiv.pdfIn PDF document text
    • http://tedosuz.iblogger.org/conduit_bending_guide_ideal.pdfIn PDF document text
    • http://websporizle4.com/32995924898z3flh.pdfIn PDF document text
    • http://zotokes.iblogger.org/majesty_chords_delirious.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/vuwewi-pojovu-rifuri.pdfIn PDF document text
    • http://sazavenegot.22web.org/fudaxebepetigisiwasulosop.pdfIn PDF document text
    • http://fastdonwload.space/hangman_movie_sequelq3z4y.pdfIn PDF document text
    • https://butemupow.weebly.com/uploads/1/3/5/3/135338881/1661281.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ditufadupogeju.epizy.com/62395893660.pdfIn PDF document text
    • http://nufewaruxemo.epizy.com/xogivorinefavusodabemot.pdfIn PDF document text
    • http://kogejikez.epizy.com/high-_scoring_ielts_writing_model_answers.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_off0000e1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A9 4824 bytes
SHA-256: 9f38147d7cfc6484b2bb6003e332edee39f4d7f2f3ea236fdd513967b1db7446
font_01_sfnt_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 10512 bytes
SHA-256: 92045ff86638019a40c4363d5c4cfbcbe1583019e8c697cf2480a45b1397a1e8