Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd924e024f581a3…

MALICIOUS

PDF

86.3 KB Created: 2021-02-28 09:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ea801e37f9fa1be326f3045d839a82a7 SHA-1: b4426b3d707390c48c4cbf5fb7f0211d31d78580 SHA-256: 5fd924e024f581a3474668e2025dd0fe118692dd4e45810b70d20c60c3522914
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a download page for a 'FIFA mobile apk mod'. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL points to a redirector that likely serves the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=fifa+mobile+apk+mod+latest+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489583/normal_5fe1c163391e7.pdfIn PDF document text
    • https://cdn.sqhk.co/mojuzizimu/cETOhcz/hair_salon_makeover_and_dress_up_games.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/hcykig6/teenage_mutant_ninja_turtles_movie_super_shredder.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457838/normal_5fe6f353d54f6.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/2jhPhdb/build_a_website_without_using_a_website_builder.pdfIn PDF document text
    • http://nelitip.22web.org/kuzifogog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fc813d6deeb4.pdfIn PDF document text
    • https://cdn.sqhk.co/kebubupoxiz/Ohihaih/cowboy_vs_zombies_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408462/normal_5fcfac5b5311e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_600c755acc9d2.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/mefadedosuw/little_red_riding_hood_story_brief_summary.pdfIn PDF document text
    • http://fixadamobus.epizy.com/zuminigudopaterate.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/synology_diskstation_ds718_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/46677574192.pdfIn PDF document text
    • http://wizuzipureja.epizy.com/lease_agreement_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/national_agriculture_information_communication_centre.pdfIn PDF document text
    • http://pajinofemi.epizy.com/sixegerilisizijit.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/biology_dictionary_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/how_to_connect_brother_printer_to_wifi_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/samsung_galaxy_note_4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 5192 bytes
SHA-256: 5a5b032dad6cda38dbca4ad1a17c3aecc35f904fb9abb275ac83f5b5c0342c5d
font_01_sfnt_off00010477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10477 10512 bytes
SHA-256: da361de81eeb40ced70a96ae1508c45a1a1be3de41d62708b6a8f0940447a954
font_02_sfnt_off00012878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12878 16136 bytes
SHA-256: b87dc9cf3f55aeef5ecd96a4f5a0c8a661d1f6fea33ffedf98a3be0636a851a5
font_03_sfnt_off00013d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D7A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71