Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a9a700fdcf8d7c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-13 21:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4b3d215ab0b7536ff415293608ecdd48 SHA-1: b30271e3f538c5baff82c4d8fac7c424d5826e52 SHA-256: c9a9a700fdcf8d7ca63ac2924e78c2f991de72b2a0424e86c43ca84ba3deeada
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wix?keyword=ap+psychology+unit+9+practice+test PDF link annotation
    • http://xadixul.66ghz.com/definition_of_sustainability.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461523/normal_60011b989dbd8.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/dshb9Jw/dimecuba_customer_service_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472506/normal_5fcf5e2ae9f5e.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/gjjewuF/slack_android_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414514/normal_6000bf6d60fd5.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/doMheif/tonic_pick_me_up_crossword_clue.pdfIn PDF document text
    • http://pmaider.com/lemon_crinkle_cookies_with_lemon_frostinggcqfs.pdfIn PDF document text
    • http://juilopkiretlo.ru/binks_brew_piano_sheet_musicqw60r.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/ehdhahc/ralojoligej.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hgFZrKK/2146212260.pdfIn PDF document text
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/7613333.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/GSihjaB/21629674669.pdfIn PDF document text
    • http://scarcebook.com/roresiwowelivomekogq4594.pdfIn PDF document text
    • http://qrastenmap.online/66686471493z30jf.pdfIn PDF document text
    • http://antonioit.space/adobe_reader_software_for_pcbahci.pdfIn PDF document text
    • https://cdn.sqhk.co/muwitajo/aAjiLig/gojarasubadoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425492/normal_5fecc9424c3bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziboporo.epizy.com/mutetaxofejovodiru.pdfIn PDF document text
    • http://bepibatavike.rf.gd/bob_the_robber_3_mod_apk_revdl.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_off0000d67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67E 5444 bytes
SHA-256: 986eaabcf8b1847856cee8314ccc97184639ca7b49febc9f5bbf9a8ddc88fdd9
font_01_sfnt_off0000e908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE908 10472 bytes
SHA-256: f5e3d781315a3ec93aaa67578a7885258883f58e71759eebe3c7e93df1a4b962

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