PDF malware analysis — malicious · dc5e00037e644058

MALICIOUS

PDF

65.5 KB Created: 2021-03-02 20:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25

MD5: 37f934719cf86e28ec74fa33646e345d SHA-1: a6a3fcd4de9aa83ad703d6656af4b90bff54543d SHA-256: dc5e00037e6440587148141fb15ca9bbbf3829dd0352a8dffa9e0af00f49f1ec

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/award?keyword=why+is+my+polk+subwoofer+not+working PDF link annotation
- http://jowakemanek.iblogger.org/vuzizabimufusud.pdfIn PDF document text
- https://cdn.sqhk.co/gepabafi/R89jjZu/car_racing_free_3d_simulator_games.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4478422/normal_6009533782a6b.pdfIn PDF document text
- https://cdn.sqhk.co/busanurutar/ig0hgAp/39169773183.pdfIn PDF document text
- https://motixovelubebov.weebly.com/uploads/1/3/6/0/136085904/4916120.pdfIn PDF document text
- https://vosanuxavuzom.weebly.com/uploads/1/3/6/0/136089669/dowaroko.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485939/normal_5fdeb7193e971.pdfIn PDF document text
- https://cdn.sqhk.co/dixejetafap/PNYWXie/lego_ninjago_dragon_hunters_sets.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/mubefula/adobe_reader_10._1_free_filehippo.pdfIn PDF document text
- http://punozow.epizy.com/latest_bhajan_ringtone_free.pdfIn PDF document text
- http://wumujofagitamix.rf.gd/nogobip.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_off0000c433.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC433	5516 bytes
SHA-256: `96795e22d0b9b6952ecd666a1ba571f638e9936f0bc0aaefd18a4396bd8d118b`
`font_01_sfnt_off0000d6ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6EC	10180 bytes
SHA-256: `2b5cb57c6fc0a8ea818216285d4df39ca9bcec9f71984bc079dce660db1895c8`

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