Malicious PDF — malware analysis report

Static analysis result for SHA-256 8578bba4f511cb9a…

MALICIOUS

PDF

69.5 KB Created: 2021-03-11 06:27:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 15217956e8df9e70ceddff945ca0808a SHA-1: c531bf6ab85bfaeeb7151746357cede76a53ec57 SHA-256: 8578bba4f511cb9a9d11c5a6cd3206cf9311b7a3d9953ff6909fe42d7269ffb9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/award?keyword=absite+surgery+pdf+free PDF link annotation
    • https://gebekogekikak.weebly.com/uploads/1/3/4/6/134694855/31b37d2f032425.pdfIn PDF document text
    • https://sazejibapox.weebly.com/uploads/1/3/4/8/134863873/saxafapapo_tovapipuberedow_lewudovazeso.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/razutu_losarigebox_gukutopiza.pdfIn PDF document text
    • https://sovinupuni.weebly.com/uploads/1/3/4/7/134762808/sisirajaji.pdfIn PDF document text
    • https://varupeneg.weebly.com/uploads/1/3/0/9/130969993/luvasov-kalapijesodu-jividemum.pdfIn PDF document text
    • https://weduparazibad.weebly.com/uploads/1/3/4/7/134710999/tezizemiveluja.pdfIn PDF document text
    • https://mefewenitili.weebly.com/uploads/1/3/1/3/131379946/639dfeb.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/merizar-nufevevizesi-faxewakezilop-lelubamosi.pdfIn PDF document text
    • http://prizinsta365.website/original_african_heritage_study_bible_online3ug3l.pdfIn PDF document text
    • http://psychologyrelax.xyz/99679720742r26su.pdfIn PDF document text
    • https://zuxosudeti.weebly.com/uploads/1/3/4/3/134359900/1678093.pdfIn PDF document text
    • https://zanagolebiwom.weebly.com/uploads/1/3/4/9/134900312/6543188.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/angel_wing_begonia_flower_information.pdfIn PDF document text
    • https://58960a86-a3f4-42d8-866e-ee2cf32068b1.filesusr.com/ugd/1ad962_f48cde51e7a24b059856cc579e0d23d9.pdf?index=trueIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_33d658c3e58e4a109e256d31d36938f4.pdf?index=trueIn PDF document text
    • http://rokalugafujat.rf.gd/35040004303.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/inquisitive_test_answers.pdfIn PDF document text
    • http://suludigana.epizy.com/fajapivexepozazagoke.pdfIn PDF document text
    • http://metorudadoz.rf.gd/30919729342.pdfIn PDF document text
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_7429e5bc99714b7d9e8d3ddf50f8f1ed.pdf?index=trueIn PDF document text
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_ab0a8b0444404d97bac6daaf5c6571ee.pdf?index=trueIn PDF document text
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_e81f99953e1b4a6794d4dbe49838c3b0.pdf?index=trueIn 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_off0000d38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38A 5200 bytes
SHA-256: 46ab0f32f3864fa3fc06377a1134dfa91548582100206c318e876e95e7d0f529
font_01_sfnt_off0000e54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54E 10396 bytes
SHA-256: 3fe531c0cf22ddc49b73140f077127c811183acb064b35ec67658158b452bb9b

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