PDF malware analysis — malicious · d8586261078f4b2a

MALICIOUS

PDF

71.3 KB Created: 2021-02-28 05:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10

MD5: a281807e925fef67f19c2d1e07c15683 SHA-1: c64936e651e22295ef751e404e941b9c3b71903f SHA-256: d8586261078f4b2a319f2dafb7f7ed89d803214e2a5fa29200020c2e21fedf4e

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=half+broke+horses+summary+chapter+5 PDF link annotation
- https://cdn.sqhk.co/sigidezok/oid17jb/southern_ohio_copperheads_schedule.pdfIn PDF document text
- https://cdn.sqhk.co/figoveraboj/bMjfgjx/61678659025.pdfIn PDF document text
- https://mewofotas.weebly.com/uploads/1/3/4/5/134524455/f983985157.pdfIn PDF document text
- https://nexiwurepefisov.weebly.com/uploads/1/3/4/3/134372078/8807444.pdfIn PDF document text
- https://dotuxebi.weebly.com/uploads/1/3/1/4/131454754/b1690644e68.pdfIn PDF document text
- https://cdn.sqhk.co/tifesiwafo/j2gibig/72323056905.pdfIn PDF document text
- https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/1033996.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://vigiwadovu.epizy.com/trig_identities_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/gafedupeba/manual_usuario_vespa_primavera_150.pdfIn PDF document text
- http://sabukizazuse.epizy.com/9408569957.pdfIn PDF document text
- http://rigitusavogu.epizy.com/71724473795.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dc3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC3A	5644 bytes
SHA-256: `19ab9db1ca3abb1227515c0d77a69db7ead3dae1d46547c1a82344437e6d45f8`
`font_01_sfnt_off0000ef4b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF4B	9796 bytes
SHA-256: `0353378b86f75555d72859d3973bcc2548c24791ee72b517559781f1cf544d80`

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