Malicious PDF — malware analysis report

Static analysis result for SHA-256 1335818ea42b3fd2…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 06:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e8441ba277b9961cc47c7a80108b7c73 SHA-1: e97ebb28ed2e44c651b5707489a01523916b89a5 SHA-256: 1335818ea42b3fd277a8a08bac9a25d4ac306ebaa0abd957b4e26a28f6c6bf22
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://fokemale.ru/award?keyword=how+to+check+chainsaw+chain+size PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476421/normal_5fdd69761ac67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497356/normal_600a03086a151.pdfIn PDF document text
    • http://migerov.xyz/the_lighthouse_trailer_ita6mu4s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450338/normal_603178cf30229.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/20731833848.pdfIn PDF document text
    • http://esagafow.fun/cules_son_las_causas_de_los_vrtigos3pyya.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_603705116b90d.pdfIn PDF document text
    • http://ipoteka.net/terraria_sword_in_stoneqlx98.pdfIn PDF document text
    • http://gouliwer.online/verb_worksheets_for_grade_3_with_answers8szzk.pdfIn PDF document text
    • http://momsmall.space/84802495064nkaw9.pdfIn PDF document text
    • http://help-copyrighteamservice.com/intermatic_timer_manual_outdoor5bkox.pdfIn PDF document text
    • http://sfhgfje5df.xyz/nowuwisile9195k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/pojokel.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/29155894248.pdfIn PDF document text
    • http://xedonufil.rf.gd/hungry_shark_apk_mod_unlimited_money.pdfIn PDF document text
    • http://joruvone.epizy.com/is_dyson_cyclone_v10_good_for_hardwood_floors.pdfIn PDF document text
    • http://tefotesibeto.epizy.com/grounding_for_the_metaphysics_of_morals_ellington.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_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 4924 bytes
SHA-256: b5c15e67a6545a55b86df85ccaf229d604f1643f268d4df306770e3df25ecaa9
font_01_sfnt_off0000f227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 10620 bytes
SHA-256: be5b618c4ffac078848e775e31353f707588b9bd951d519c692b58a2c2cd2ed3