Malicious PDF — malware analysis report

Static analysis result for SHA-256 e829a87521ab2fc1…

MALICIOUS

PDF

70.9 KB Created: 2020-12-31 08:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 030d3ca11e6ec6494d6d8c029b9784c8 SHA-1: 0fe46c96aa865af38e948e485bbf4cf0e4ddaec3 SHA-256: e829a87521ab2fc19abddc319e14454cd0b6b85baaa35fce453a52c6759feb1d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=possessive+apostrophe+worksheets+high+school PDF link annotation
    • https://cdn.sqhk.co/vemoderama/mgigfjj/speed_ball_rolling_ball_racer.pdfIn PDF document text
    • https://cdn.sqhk.co/fabupiguboxa/dgcxBhd/20761645754.pdfIn PDF document text
    • https://cdn.sqhk.co/dusimefosix/Ghjiija/war_gears_online_games_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fidapulano/jhlpRnq/bosagawolurub.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolosew/gbjgjh4/clash_of_clans_zombie_mod_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/dexavoba/HOibjhb/stickman_revenge_3_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/MYijAia/imdb_movies_2019_best.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393644/normal_5fe3aaff694b0.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://uploads.strikinglycdn.com/files/5a18d469-5dc3-4eda-8e0f-78a1d847e1d0/32858433255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a544b355-d84d-42a3-ac35-89d566b37d55/32379150415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbdb1ba-c7cc-4cc4-9eb4-e9d20970e463/jobukupibozifilinufifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e714fe0-56ab-4ec9-972a-131f1e41657a/pirates_of_the_caribbean_theme_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb4c88fd-5547-4319-bb8e-feca162476e6/ryle_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce960506-7998-4a0b-8e6c-d504732393f1/59238946175.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6A 5096 bytes
SHA-256: c45ea0b04873e1f0ea2c93bcd8a0d72821c65b0616b4283ff09212df5b5c2bb9
font_01_sfnt_off0000dced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCED 10468 bytes
SHA-256: 2b61b262805267e0b094b40af4cc1284cdb85683e56e329f2bb4bd98c460afe4
font_02_sfnt_off000100b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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