Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be81b88ed89ee7b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-25 14:23:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cc575b0996e7f84a622d1afcd375cd54 SHA-1: 3770b127164114ae0af23ca85a4f2a4c74909f2a SHA-256: 5be81b88ed89ee7b6118624fa37a522055bad7aaa0c75306161b8ebc20563e4c
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=stihl+br420c+magnum+backpack+blower+manual In PDF document text
    • http://detonic-shop.website/49846815158vxrmq.pdfIn PDF document text
    • http://giveaway2020.info/fikubikipilijowigine5wia7.pdfIn PDF document text
    • https://dabelebixoxo.weebly.com/uploads/1/3/5/3/135310161/9066726.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/Bphfjjq/degowifiradiru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417423/normal_5fe0a7942a46e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380230/normal_60076e95b7d9b.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelemusib/chhD6hc/werewolf_word_game.pdfIn PDF document text
    • https://cdn.sqhk.co/musezikuzapi/IiipigK/73761668544.pdfIn PDF document text
    • https://lefexaro.weebly.com/uploads/1/3/5/3/135324439/d10f22a37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445532/normal_5fd797ec5fdf3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447914/normal_6004a16f45e01.pdfIn PDF document text
    • http://tb-films.ru/innova_3160g_bluetoothysnb4.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/hajbiaj/kirasa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456996/normal_5fe36e617aef6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tilitun.epizy.com/42985482853.pdfIn PDF document text
    • http://vogusofesa.rf.gd/eclipse_java_7.pdfIn PDF document text
    • http://pivotigapux.rf.gd/43886901664.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_off0000d9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B5 5932 bytes
SHA-256: bb913fd83245616f44cf87269538becebc9b65477c7339501bf9e29bcec84628
font_01_sfnt_off0000edd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 10112 bytes
SHA-256: 2e7bc8a55c451e6348884c124db694d38be8e8b74ca2a2254225cbc28a181b2a