Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b5b7ed7ea0a07db…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 03:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4e611bc5b0c1bb4d5051d6f98630c1fa SHA-1: f2dca7347ecd3f5b866bf3a5907c91541e1cc0eb SHA-256: 0b5b7ed7ea0a07db3a98f692e181ce98aab34009295e04bbefd82ac1c04b014c
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://crophysi.ru/wix?keyword=thanatopsis+selection+test+answer+key In PDF document text
    • http://vaxuserinux.22web.org/babexe.pdfIn PDF document text
    • http://mmmmmme.space/camera_guard_pro_blocker_apkpnkqi.pdfIn PDF document text
    • http://seamanygau.best/bolted_connection_design1i5lw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446772/normal_6007b42327936.pdfIn PDF document text
    • https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/kakujawugoteg.pdfIn PDF document text
    • http://raisinshq.club/fugiborikivuwewafub5lp03.pdfIn PDF document text
    • http://knitfqph.site/62235092171qkn1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460446/normal_603b4ffe97e23.pdfIn PDF document text
    • http://afracheat1.xyz/netaxemajumevojirejepajisp3a9m.pdfIn PDF document text
    • http://zhigina.ru/35050209322jmea3.pdfIn PDF document text
    • https://riwumoba.weebly.com/uploads/1/3/5/9/135965326/lupifepenum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_600ca034deb02.pdfIn PDF document text
    • https://sagojuxejuzogug.weebly.com/uploads/1/3/4/5/134598596/vazitubewolala.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/temujonuwu/47393192899.pdfIn PDF document text
    • http://surifetopene.epizy.com/variation_classification_guideline_2016.pdfIn PDF document text
    • http://safilizejodi.epizy.com/xuxavelibisosu.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/liwusadoxugavoko.pdfIn PDF document text
    • http://serozefa.epizy.com/62941129105.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/gipudafegezupunatukiluku.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_off0000cf5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5C 5228 bytes
SHA-256: 2bdfc38c2e6a1a5bea756fbf7d380dce1a0a3315e332a8bf642400ff5ad459f3
font_01_sfnt_off0000e12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12E 9936 bytes
SHA-256: 28f6881fe0f1ca321d83ff16cabab184b0d350c3acf23d164bdd64f7d470c43d