Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fdfc1d4429885c5…

MALICIOUS

PDF

76.0 KB Created: 2021-02-23 06:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 62b214a3631d46b6ea1d7cd2ea6ce91e SHA-1: 7e9f9fd81c7b8bb64d73f602da4dbf8d5fbe7d26 SHA-256: 5fdfc1d4429885c5b563c905c483f9a35fdb038eb439ea9d0e55b02298642d80
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=the+great+sperm+race+unblocked+games PDF link annotation
    • https://cdn.sqhk.co/nomuzali/Cgghejd/xomuj.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/VhdDieu/73206630614.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogusobade/ohhdjbr/segovesexuru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380382/normal_5fdcd2dd62b33.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/iWUciEb/60488089810.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370294/normal_6001396a9cb90.pdfIn PDF document text
    • https://cdn.sqhk.co/jonuwezipagi/ifgh7ny/cross_stitch_patterns_star_wars.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385437/normal_600623d599aab.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/sgdMZii/4505253483.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369802/normal_5ff77ffb0e257.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479938/normal_5ff659891bed6.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/XgeUdhg/samsung_level_u_pro_anc_price.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/gehjicT/the_maze_runner_full_movie_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/hgifhar/plants_vs_zombies_1_apk_oyun_indir_club.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/jhhVQwK/d-_day_movie_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/d1ggjbn/xcraft_shark_tank_episode.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/jumedemimo/difference_between_fact_and_opinion_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/a_clockwork_orange_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/15923749846.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_off0000d421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD421 5640 bytes
SHA-256: da54598882b38916ca23dbac66489934a44b978bb789d26b406cae41edcdb82e
font_01_sfnt_off0000e71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71B 10696 bytes
SHA-256: 5a263b64becaaf68bbd6c6da4c96fb0c58e4925466152bf8e1b97a58c1247514
font_02_sfnt_off00010ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA0 16164 bytes
SHA-256: 3afbc95f4a2677bf4c8b77bd7df62e4dbeb651db4b5e482cf97b58e472170d58

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