Malicious PDF — malware analysis report

Static analysis result for SHA-256 353e73a82b62a01a…

MALICIOUS

PDF

99.3 KB Created: 2021-03-23 17:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cd9267d8fd0bce0be02ff0f5f41e3b29 SHA-1: bcc0a648184acec2c44fc7937b2c63afb5acee35 SHA-256: 353e73a82b62a01a7eb2f458c1970091c3518f08b97911e79eadce5e09a91dfe
136 Risk Score
Tags
free-cdn-ebook-manual-lure

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 phishing attempt. The document body, though partially garbled, contains text related to '94 percent game answers level 20', suggesting a lure. The primary heuristic identified an image lure linking to an SEO redirector, which resolves to the suspicious URL https://maypoin.ru/123?utm_term=94+percent+game+answers+level+20, likely leading to a phishing page.

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://maypoin.ru/123?utm_term=94+percent+game+answers+level+20 PDF link annotation
    • http://xatulap.22web.org/nimiveruvakazuvis.pdfIn PDF document text
    • http://lipatajewaxo.22web.org/cyberpunk_2077_ps5_pre_order_digital.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/sumesawoxajew/72831371877.pdfIn PDF document text
    • http://garulolit.rf.gd/call_of_cthulhu_character_sheet_1920.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/56654383205.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/camila_shawn_vmas_performance.pdfIn PDF document text
    • http://javamav.rf.gd/fozuxanosoru.pdfIn PDF document text
    • http://vuvodulewuxewe.epizy.com/spreadsheet_vs_worksheet_vs_workbook.pdfIn PDF document text
    • http://fugewad.rf.gd/86263892476.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/boron_nitride_nanosheet_dispersion.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/5231045028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fe764d4-5bc4-4f47-b062-dcfb93d7510a/67951064711.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/26944767711.pdfIn PDF document text
    • http://zijanoxudajami.epizy.com/fujemapibuwowaxabanukib.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/calling_application_in_android_studio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3badb11c-d906-4e5b-a138-3ef019212f34/introduction_to_java_programming_11th_edition_quiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/dafowiwuzutozaxozibiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853b9ea3-e03c-40a3-8a43-c8a351700b0b/what_is_the_plot_of_tokyo_ghoul.pdfIn PDF document text
    • http://gakupoxefale.epizy.com/is_it_better_to_have_two_dachshunds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc94c66-072f-495d-9669-b570b67e104d/how_to_set_spin_only_on_lg_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d81337bb-32ea-4969-8c05-62779932f5d0/xozuniwifafepolamubavutu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC4 5828 bytes
SHA-256: f41ce1d2e93fcae247e285f6a155b99c84349634916040d62fbaed6df284d94c
font_01_sfnt_off000141a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141A4 11380 bytes
SHA-256: 8d94143853b089e43491332fb4798436e45ca14837c8cad71e6699eb03208420
font_02_sfnt_off0001685c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1685C 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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