Malicious PDF — malware analysis report

Static analysis result for SHA-256 e359c276335b2c20…

MALICIOUS

PDF

87.4 KB Created: 2021-04-05 14:58:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 43a610e971db9668eda1e5fe2eb14f58 SHA-1: 2152d6ed791916895142844deb730f92793408bf SHA-256: e359c276335b2c2022a371c3cd0b2d24536d67817277185c6241cfff1add7c2a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL `https://xezojetit.ru/strik?utm_term=garmin+gps+2595lmt+manual` is identified as a redirector for free-download phishing, aiming to trick users into believing they are downloading a legitimate manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=garmin+gps+2595lmt+manual PDF link annotation
    • https://cdn.sqhk.co/gavonenegave/hhfPic7/91897162907.pdfIn PDF document text
    • https://cdn.sqhk.co/soribivevi/gskBqhj/kalah_mancala_board_game.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/gh7Viad/homescapes_level_24_impossible.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/OhbgiXb/razalean_pm_ingredients.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_60657ede29939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480745/normal_5fe9a1f32d972.pdfIn PDF document text
    • http://garobunatuxovi.scienceontheweb.net/california_consumer_privacy_act_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_601b45d54a0f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483081/normal_5fe157e40c989.pdfIn PDF document text
    • https://cdn.sqhk.co/lokijuzim/chbunkW/selaratusijade.pdfIn PDF document text
    • https://cdn.sqhk.co/nasubivapu/djdiggc/mobile_phone_ringtones_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/hbigiib/esic_accident_form_12.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/idqjcjg/photo_colour_editing_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460266/normal_6069ff5bcb93d.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/P3jbohb/23027671212.pdfIn PDF document text
    • http://kitixukizogutik.mygamesonline.org/gary_leal_advanced_transport_phenomena.pdfIn PDF document text
    • http://nubuxeki.scienceontheweb.net/sales_and_marketing_director_job_description.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/wegemebufojafak/guardian_holistic_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/10912108779.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/23151072266.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/6690792841.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_off00011801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11801 5584 bytes
SHA-256: a9e111d0dc9828ec25484faacbcd4d962f4f401ebde8f6ab8ad13ae7dbb4b41e
font_01_sfnt_off00012ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE8 10988 bytes
SHA-256: 8d52d8a9982f1e38db5117ad43438a44af6ab4803bedd48ce8e7c8bef982aed7

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