Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eeef29f0a279410…

MALICIOUS

PDF

82.2 KB Created: 2021-03-21 03:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a98938459847c682afd00dd9210c6e58 SHA-1: 55868ed1aa34ba01e57e0a70497ab2df3691d92c SHA-256: 9eeef29f0a279410483f389c68b9722240ee85f15f2cbf30cd3b43b250e3fb5d
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a high-risk heuristic firing for a redirector link, indicating a 'free-download phishing' lure. The embedded URL, https://zajinet.ru/award?keyword=food+test+for+non+reducing+sugar+pdf, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it is designed to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://zajinet.ru/award?keyword=food+test+for+non+reducing+sugar+pdf PDF link annotation
    • http://paxenazubenib.mygamesonline.org/6722951682.pdfIn PDF document text
    • http://rawitotizoxuk.scienceontheweb.net/xetaja.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/88281911828.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/eheAjbZ/47191745117.pdfIn PDF document text
    • http://witomemu.scienceontheweb.net/agronomy_book_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/wifx4hf/jalatexepavivon.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/vanatul/rpg_backstory_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fbef966-0753-4173-94f6-918d600e2028/45961577210.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/rulogewitekuzisezenojumol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c837e9b-0dae-40e7-bc36-3bbf7559f3c5/lightbown_p.__spada_n._2013._how_languages_are_learned._oxford._4th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4590361e-e2a9-4a3b-bf87-831bf87d811d/69669644608.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/90291990488.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/mordheim_rules_part_2.pdfIn PDF document text
    • http://mewabetowa.myartsonline.com/91242093893.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/fatipagokevadamoxesita.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/dajixesigalaxutoxora.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/bitdefender_box_2_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/nukajadupugajuputokumejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ea0aa5-3046-463e-bcc6-25a009d6c601/logitech_k360_wireless_keyboard__m185_mouse_combo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf310703-c613-4dfe-8ddf-abc74f31896b/how_to_embed_in_keynote.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/sipibobedajobip.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.

FilenameKindSourceSize
font_00_sfnt_off000103a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A8 5248 bytes
SHA-256: ca140cca7b4f3d5f0414fd2f6676b967e4b1e6037d37dc618bea730879c9c2f6
font_01_sfnt_off0001159b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1159B 10968 bytes
SHA-256: 8a716a4f0a304f78cd6e8f08546dd2fc580d8c640713fbcf750682215ec7dea6

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