Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e5daf8b0436348…

MALICIOUS

PDF

72.2 KB Created: 2021-02-07 09:50:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e3715bd99eb5014fb8df94b1dfd6bf01 SHA-1: 70a38bdfc2657745b5c40beef7632e49a8524420 SHA-256: 76e5daf8b0436348befb73f76877f9e7e146cea59c993956ff532394d204f2e2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://leonvi.ru/123?utm_term=download+wwe+immortals+hack+apk PDF link annotation
    • https://cdn.sqhk.co/xakelafu/eQhdtha/brain_training_exercises_online.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/ghjjify/jutonopo.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/1hhekvW/5644477479.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/c1gcvgd/21737969272.pdfIn PDF document text
    • https://wafilanukeg.weebly.com/uploads/1/3/5/3/135309269/molaxido.pdfIn PDF document text
    • https://midodelawipage.weebly.com/uploads/1/3/4/5/134585137/338399.pdfIn PDF document text
    • https://bebemabuvi.weebly.com/uploads/1/3/1/4/131453051/mebelexiperawaromo.pdfIn PDF document text
    • http://fresh-ita.fun/imperfect_tense_in_spanish_worksheet_answersbtida.pdfIn PDF document text
    • https://mizefubu.weebly.com/uploads/1/3/4/6/134637235/nixowawop-fufozera-mitomuwelizes.pdfIn PDF document text
    • https://ketokaxuvora.weebly.com/uploads/1/3/1/8/131856042/4760346.pdfIn PDF document text
    • https://wiwujakibites.weebly.com/uploads/1/3/0/7/130740442/fuveroraxosimoki.pdfIn PDF document text
    • https://cdn.sqhk.co/mekoposa/eifSmih/1922438175.pdfIn PDF document text
    • https://vunidiripoga.weebly.com/uploads/1/3/1/4/131453449/9854430.pdfIn PDF document text
    • https://cdn.sqhk.co/jisofoxabap/8wghicT/kodiak_cakes_pancakes_frozen.pdfIn PDF document text
    • https://gipenozup.weebly.com/uploads/1/3/1/0/131070487/8401111.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5468 bytes
SHA-256: 2dda1a3256867783595f2337ffd29f1854751f8ec8f5a3ebc7583f61407c8012
font_01_sfnt_off0000ef54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF54 10756 bytes
SHA-256: ab6b48a297d60324cc04b7a61e8578485db8223dec20cf859361dff5bb7c09c1