Malicious PDF — malware analysis report

Static analysis result for SHA-256 1491ffa50db3f100…

MALICIOUS

PDF

65.7 KB Created: 2021-02-15 19:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 20dcdb2cf346ba9af5c56c7dfa7f8381 SHA-1: 4de79f38cbb9e847064d4c156388398ee58a4739 SHA-256: 1491ffa50db3f10033b72e66a672f7efdaddb61e0eb0cbc77b0855d5eb338a15
126 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
  • 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://jacksth.ru/wix?keyword=exponent+rules+simplify+worksheet+answers+algebra+1 PDF link annotation
    • https://mezikemopirexat.weebly.com/uploads/1/3/5/9/135993778/wutivaweboxed-papurun.pdfIn PDF document text
    • http://raxuzogigegekaj.66ghz.com/tivupewisiverafarevo.pdfIn PDF document text
    • http://xuzevofut.22web.org/french_direct_indirect_object_pronoun_worksheets.pdfIn PDF document text
    • https://bazafegaxu.weebly.com/uploads/1/3/1/3/131383427/wenufowesufupesa.pdfIn PDF document text
    • http://xenavowi.22web.org/nupipivugenokudi.pdfIn PDF document text
    • http://bunedose.22web.org/78714665292.pdfIn PDF document text
    • https://pelabomorifij.weebly.com/uploads/1/3/4/6/134628360/3634126.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/zikeko/32299368658.pdfIn PDF document text
    • http://jusudab.epizy.com/bond_angles_chart.pdfIn PDF document text
    • http://govuwetubor.epizy.com/bewars_movie_full_hd_telugu.pdfIn PDF document text
    • http://zuvidetalenaras.epizy.com/wixifunoxag.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/kovixifizur.pdfIn PDF document text
    • http://zexizel.epizy.com/biohazard_quest_osrs_quick_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/lavovikegopapisos.pdfIn PDF document text
    • http://gogewafusa.rf.gd/tanaman_gymnospermae.pdfIn PDF document text
    • http://zixaxonenugoko.epizy.com/aluminium_perforated_sheet_supplier_in_singapore.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_off0000c75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75A 5788 bytes
SHA-256: c243df28ec3a07efb49957b1ab07417850e1bfb60025b5dc6999e03534b8390d
font_01_sfnt_off0000db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0C 8944 bytes
SHA-256: 9f7e2a8a2d147d7ea85c0dc490d0608c74c1c0f94307a5cc89ee85853b45938b