Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb5defb8b8a14a1…

MALICIOUS

PDF

70.2 KB Created: 2021-02-14 19:18:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08ca76a0ce8846748a592abb108b4a55 SHA-1: 1e5d9c702c5d850366170895cf4e0c402b9e2e63 SHA-256: adb5defb8b8a14a134a90c36a75ae68cdc7d65f8db24b90ae2d32303595c4b70
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://jottigo.ru/wix?keyword=color+by+number+addition+and+subtraction+worksheets PDF link annotation
    • https://pikulevixabokof.weebly.com/uploads/1/3/1/6/131606248/3266928.pdfIn PDF document text
    • http://xtina.online/34415002848rn4m8.pdfIn PDF document text
    • http://goodsfor.life/1270800761u6wwh.pdfIn PDF document text
    • https://cdn.sqhk.co/xetosusaxi/tIjfOvw/gafipuvesewuwukewijij.pdfIn PDF document text
    • http://ttttrrrr.space/858011807583a29y.pdfIn PDF document text
    • https://borojixupoluba.weebly.com/uploads/1/3/5/3/135316148/lusinokavipaxopid.pdfIn PDF document text
    • http://zubosoxi.22web.org/xikurumefodumelut.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/acidosis_tubular_renal_gpc.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/PIqghig/mafujo.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/Tajchbh/losorizufaxudisapo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zanukabijegur.rf.gd/billie_eilish_ocean_eyes_music.pdfIn PDF document text
    • http://pimisigejofal.rf.gd/60219822587.pdfIn PDF document text
    • http://suvumudupese.epizy.com/38439553088.pdfIn PDF document text
    • http://tulinaf.epizy.com/16976011934.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_off0000c038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC038 5480 bytes
SHA-256: a4783b41361a5a26af5aeabdf90c6a5a0dd71b4ebd7ffd97ee1ca513eb5fdf04
font_01_sfnt_off0000d2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BD 10112 bytes
SHA-256: 1abd741c702f2b27a720c86e52189f423e389ac809a45831af9171bd87c01cb7
font_02_sfnt_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 16312 bytes
SHA-256: 028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b