Malicious PDF — malware analysis report

Static analysis result for SHA-256 30eac9d4cf1300ad…

MALICIOUS

PDF

71.5 KB Created: 2021-02-20 18:18:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c7f5c8423b368b4efe3a08ff5da2f7dd SHA-1: cbdedbd66b8b68ea95d96387fc8d5057214e9fa8 SHA-256: 30eac9d4cf1300ad8bce1cd377c28d5518e2a9a903ce27c0c6a91e6be942ba11
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=escape+being+stranded+at+school+answers PDF link annotation
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/gaxulaw.pdfIn PDF document text
    • https://birugenok.weebly.com/uploads/1/3/4/6/134632973/8037642.pdfIn PDF document text
    • https://fifikasato.weebly.com/uploads/1/3/1/4/131437502/difenewelugabi.pdfIn PDF document text
    • https://cdn.sqhk.co/fonixoligem/eq0Kbjj/shudder_movies_review.pdfIn PDF document text
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/rakufev_buban_zalomer_jipanerepoketiv.pdfIn PDF document text
    • https://vifejekim.weebly.com/uploads/1/3/5/3/135322606/buxaratolakuvigenaja.pdfIn PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/vunexifobo-rimatuziwif-fisojena-gufutoxe.pdfIn PDF document text
    • http://martans.space/177178426522lsal.pdfIn PDF document text
    • http://heleogose.online/35136608403yemto.pdfIn PDF document text
    • https://vulalubog.weebly.com/uploads/1/3/4/8/134862436/8231028.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/hija580/salibam.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/pajeriramal/gregorian_chant_dies_irae_sheet_music.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC682 5524 bytes
SHA-256: 7a086904d1cc8d6cc6736efbaab7a8225f1a1e93fe2fe2fc717d7afaef1b757b
font_01_sfnt_off0000d950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD950 10256 bytes
SHA-256: 9eb7b54edf5dee79dc72fc968db50e5981b0c889e6c156d827f10a6fbf152eb8
font_02_sfnt_off0000fc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC64 16108 bytes
SHA-256: b10dcad0861d5f3cd9b94bcc0b3008a2f778be511d30989fa3518a4d31d20aaa