Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a56251f480c7c34…

MALICIOUS

PDF

77.5 KB Created: 2021-02-14 21:25:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 16a1f47996c9e7b907a30c97970e4eba SHA-1: 90de0f4820bd66c7592640c3abbe1df5a0c2a1cc SHA-256: 4a56251f480c7c341b1f116bb966534e1870198ba62d7b5c29e852319d10f181
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains an embedded URI pointing to a suspicious domain. The PDF structure and embedded content suggest it is designed to trick users into visiting a malicious website, likely for phishing or to download further malicious content. No scripts were extracted, but the presence of external URIs is a strong indicator of malicious intent.

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://baarspo.ru/wix?keyword=hello+cheer+words+2020 PDF link annotation
    • https://cdn.sqhk.co/fusajovogi/Qjdidjh/88934895574.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/jjgcrgj/bowling_pro_shop_owner_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/hhcHZA9/3203610814.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/gc4TYia/mapavujusepab.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/Khawqja/the_academy_the_first_riddle_chapter_3.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/qhbSFwK/ben_and_holly_s_little_kingdom_coloring.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/71sjjge/sky_force_game_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/dighwqo/96878384159.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/ijcPcNT/the_hitman_s_bodyguard_trailer_song.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/NjcS9ji/wewilavutaxujabore.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/Bieigji/lekexit.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/fgeBMiv/lynx_bus_tracker.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/6jcjfg2/70728557710.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/ukhbxgd/list_of_fruits_rich_in_vitamin_c.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
    • http://jipowefata.epizy.com/15748640169.pdfIn PDF document text
    • http://davafegi.epizy.com/brother_printer_l2520d_driver.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 8

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_off0000e76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76E 4700 bytes
SHA-256: e3fd3ab357fd0d6045c6750c962185c8fd796cd580a3478090044eee9537bbfc
font_01_sfnt_off0000f778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF778 10316 bytes
SHA-256: dc94745d2ff35d95da593027d92d80b5392ca6dd8703225ec8fc73b9f97aff4f
font_02_sfnt_off00011a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A7B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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