Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7948fc2140d29d…

MALICIOUS

PDF

84.8 KB Created: 2021-05-08 17:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1698b8b5f15164de5733d97d59de923b SHA-1: fd2209bd1e62708e8bc5e5c322d138522e35f87f SHA-256: dd7948fc2140d29d13b9885f691cd4574e603810824795b9391224356253926a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic indicating an image lure linking to an SEO redirector, specifically pointing to the URL https://botokaw.ru/strik?utm_term=how+to+end+a+professional+letter+of+recommendation. This URL is flagged as suspicious and is likely used to phish for credentials or distribute further malware. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/strik?utm_term=how+to+end+a+professional+letter+of+recommendation PDF link annotation
    • https://s3.amazonaws.com/matogapibelifiv/buffalo_wild_wings_nutrition_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/45519566040.pdfIn PDF document text
    • https://cdn.sqhk.co/duxapotor/YHAnIsX/red_button_shirt_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/41608001166.pdfIn PDF document text
    • https://cdn.sqhk.co/ketixudolu/hcjiuhj/angular_2_form_data_to_json.pdfIn PDF document text
    • http://xukejufivakege.iblogger.org/garasumalukivirakinowo.pdfIn PDF document text
    • http://gugolufixa.mywebcommunity.org/kejabixet.pdfIn PDF document text
    • http://pixujuxe.mypressonline.com/8224029262.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/Wjiicia/rugesonusazo.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/graco_relay_jogger_travel_system_reviews.pdfIn PDF document text
    • http://sekasululaba.iblogger.org/36313894500.pdfIn PDF document text
    • http://xebubux.sportsontheweb.net/34528794593.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/35574151645.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sinusisokopex.atwebpages.com/xefilojunijakokipuvidatof.pdfIn PDF document text
    • http://ripotuteruposa.rf.gd/feasibility_report_on_poultry_farming.pdfIn PDF document text
    • http://lewafozilit.epizy.com/41271707077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e8454f-95ba-4973-9f05-69ca0dfa1c13/25746346363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db4c7e29-e20a-4187-ad7b-a64110a6aeb9/why_wont_my_lay_z_spa_heat_up.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c4c041-049b-4e07-9ae5-08e930421b02/lujenakaxoliduva.pdfIn PDF document text
    • http://fowuxolizafiful.epizy.com/wikimirunanewo.pdfIn PDF document text
    • http://wojixefem.epizy.com/happy_wheels_pc_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92faf771-5021-4fce-90bd-ab9883d65376/14756758014.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FA 5144 bytes
SHA-256: d896d2f5e74c9c6150da9b02f94f39288a9c326fdac5034678dc7eadaf950216
font_01_sfnt_off0001126a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126A 10860 bytes
SHA-256: 1848eb5f4ba78c71a7cd438296602fb3d139f42ae4c2a66089da7f55c39a1cbf
font_02_sfnt_off0001378c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1378C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c