Malicious PDF — malware analysis report

Static analysis result for SHA-256 9792a91d747b775d…

MALICIOUS

PDF

74.2 KB Created: 2021-02-25 12:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 69dd611d923c7db3adbd6f646b9c85bd SHA-1: b649023b2d341931c9ebe9ddae962a2614be38a7 SHA-256: 9792a91d747b775de728b753015877eb8cf8ab2f0e8c64e4d9ea26e4927ce456
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI and an SEO redirector link suggests a phishing or malware distribution attempt, using a technical lure about network configuration. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=foscam+subnet+doesn%2527t+match PDF link annotation
    • https://cdn.sqhk.co/turanexode/Yjiiape/police_vs_crime_online_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zaperarori/FQibjcb/batman_the_enemy_within_ps4_metacritic.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/cheese_pasta_recipes_vegetarian_indian_style.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/why_is_my_spectrum_internet_box_flashing_red.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/mjigeQ1/call_of_duty_warzone_download_for_android_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/ihMdieV/computer_launcher_for_windows_theme_apkpure.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/yard_machine_riding_lawn_mower_wont_start.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/fjaicjh/66638069662.pdfIn PDF document text
    • http://katipef.medianewsonline.com/rezosuriritisovike.pdfIn PDF document text
    • https://cdn.sqhk.co/gopefovepagi/hgOZhbQ/infectious_diseases_treatment.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/33660451361.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/whhriaL/selugaka.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
    • https://s3.amazonaws.com/janodojivi/aol_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/redundancy_calculator_spreadsheet_victoria.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97A 5016 bytes
SHA-256: 2ba5aee698ba54de313c1f671403abef269733a26f2f9ef364c648fb7b0c34c5
font_01_sfnt_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 10364 bytes
SHA-256: 20fae31290398256a1f8b9e7909866a7a2634edabde70b7f35c88310dff186fb
font_02_sfnt_off00010dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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