PDF malware analysis — malicious · 06d634e311c0f316

MALICIOUS

PDF

71.0 KB Created: 2021-02-26 10:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10

MD5: adb7d746896acf54895e2ab0777b66fc SHA-1: 5b741251258b49704921744bd8e7dc1041ba5074 SHA-256: 06d634e311c0f3165d722b2041731cefef02f7793f82a57b8301d37cec81879d

136 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/award?keyword=how+to+eat+in+a+calorie+deficit+calculator PDF link annotation
- https://cdn-cms.f-static.net/uploads/4492918/normal_5fe8816014a86.pdfIn PDF document text
- http://fisareboveda.getenjoyment.net/how_to_replace_a_water_heater_element.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366357/normal_6013891e254a5.pdfIn PDF document text
- https://cdn.sqhk.co/fubafonu/hg4ichg/test_drive_unlimited_freeroms.pdfIn PDF document text
- http://xijulefabogi.getenjoyment.net/38917692810.pdfIn PDF document text
- http://lofajemami.sportsontheweb.net/22561994835.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/pizivurapab/miwixi.pdfIn PDF document text
- https://s3.amazonaws.com/xonobijikivo/apkpure_apk_free_for_android.pdfIn PDF document text
- https://s3.amazonaws.com/tadevewuju/rurulanejotad.pdfIn PDF document text
- https://s3.amazonaws.com/dozore/7904002670.pdfIn PDF document text
- https://s3.amazonaws.com/fefurorobumi/android_button_onclick_new_intent.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_off0000da8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA8B	4888 bytes
SHA-256: `05a51bb321a054f845b091ce0e3559449f2c080e09864352478bcd1778c5532e`
`font_01_sfnt_off0000eb4a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB4A	10504 bytes
SHA-256: `aef1307cb3e68ef634a37a4bf10b23ef76f9dd724950f0b11dfd40a50ace7df8`

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