PDF malware analysis — malicious · 58edb84f56ea7a7b

MALICIOUS

PDF

69.6 KB Created: 2021-02-27 14:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: 82c7d9dabfa3a0deec313f5ba5035d39 SHA-1: 81d68161ecc60b168fe3bb1b5963f45d2d26e6b2 SHA-256: 58edb84f56ea7a7bae44cdbe27921539a48e65d1836b05d5324faa28e27fa8dd

136 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
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://maypoin.ru/wix?keyword=hino+truck+repair+manual+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4422145/normal_6011a97c35095.pdfIn PDF document text
- http://dutivozupofamap.22web.org/prepositions_of_place_quiz_with_answers.pdfIn PDF document text
- http://miromawetibikew.mywebcommunity.org/fozazenapiwoxuwad.pdfIn PDF document text
- http://peromopativej.mypressonline.com/xogametanudorixinufob.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374540/normal_602d9d6f51ae1.pdfIn PDF document text
- https://cdn.sqhk.co/tipefima/ohegchb/37451967449.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/xafaxotaful/zawosi.pdfIn PDF document text
- https://s3.amazonaws.com/bupaxomu/75937485880.pdfIn PDF document text
- http://bufijonewufo.onlinewebshop.net/tojovowajesivoriw.pdfIn PDF document text
- https://s3.amazonaws.com/pevarijidasalop/blouse_ka_design.pdfIn PDF document text
- https://s3.amazonaws.com/bepukuba/is_stainless_steel_magnetic_yahoo_answers.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_off0000d5ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5AD	5148 bytes
SHA-256: `8e016b92e69a22a9a4e364ef54feb7a6ada501a3dc914108989f8b25608c6eb6`
`font_01_sfnt_off0000e71f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE71F	10196 bytes
SHA-256: `39646e8f5479598dbc3c9a1fd76035c5c4da2d1958dc2e466496e9f6eeb8bd8e`

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