Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d006e873fa2f02f…

MALICIOUS

PDF

82.4 KB Created: 2021-03-17 18:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58873791df7d3d9ca7b33ba5a15f946d SHA-1: e5fb1849fc8814a9565b1c4a063cf35fee4f1bf3 SHA-256: 2d006e873fa2f02f5ff3fc99a1dd3b4e78c51b1b2a83d804fc4e8fb9a9b0d1bd
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/123?utm_term=os+grandes+economistas
    • https://static.s123-cdn-static.com/uploads/4406166/normal_5fc92ee089cf6.pdf
    • http://varistop.site/betternet_apk_para_iphonedsvhi.pdf
    • https://cdn.sqhk.co/pigexebobe/jbrWhhc/play_next_earnings_date.pdf
    • https://cdn-cms.f-static.net/uploads/4464082/normal_603d5518e30f4.pdf
    • https://cdn-cms.f-static.net/uploads/4470681/normal_60298601dcd99.pdf
    • https://cdn.sqhk.co/zegofurop/RgcTdOd/82220144401.pdf
    • http://getfreecreditreport.info/junuweziso0ppre.pdf
    • https://cdn-cms.f-static.net/uploads/4505096/normal_6009cd6e68789.pdf
    • https://cdn.sqhk.co/jolodovi/isshhjM/ivan_the_silverback_gorilla_book.pdf
    • https://cdn.sqhk.co/lilapanorup/gggcUie/fajek.pdf
    • https://cdn.sqhk.co/rogenujudita/tuhhjhE/zara_sale_2020_summer.pdf
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5fefc11f46c79.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/aff08ed0-993c-45ab-8e93-570d3879558d/how_to_read_york_furnace_serial_numbers.pdf
    • https://uploads.strikinglycdn.com/files/456cd4b6-7530-4bb4-a2f4-956c806ce652/polipelasi.pdf
    • https://uploads.strikinglycdn.com/files/02030491-1554-40d3-b7f9-500fd791af3f/39136485863.pdf
    • https://uploads.strikinglycdn.com/files/52fb852f-d3ab-45cf-8486-fc55475eff26/death_note_movie_2017_characters.pdf
    • https://uploads.strikinglycdn.com/files/aaf3217b-c5bc-403c-96d8-7a1e9aaba8cd/26544310973.pdf
    • https://uploads.strikinglycdn.com/files/98948840-abc1-4f0a-ba59-38656c2bd934/integrated_chinese_level_1_part_1_textbook_simplified_characters.pdf
    • https://uploads.strikinglycdn.com/files/9c92e818-a04e-4795-8009-19220aae689e/how_to_take_apart_a_washer_to_clean_it.pdf
    • https://uploads.strikinglycdn.com/files/39106457-633c-4b16-92cd-0539c988982e/17852261234.pdf
    • https://uploads.strikinglycdn.com/files/aadd81bb-8067-45a0-b9b1-853c92504b31/32593932448.pdf
    • https://uploads.strikinglycdn.com/files/799d269c-2ae3-48d4-b22b-7d74649b87b5/47238358986.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecc4.bin
4a1d4083caeb314b51beb77f7747af16b84ec4495f808f8b17d7c690a1bc3ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC4 5252 bytes
font_01_sfnt_off0000fe8a.bin
21c37237ca5365b522d16eece403215668b8357765c2aece8f95adbe31cb6d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8A 13376 bytes
font_02_sfnt_off0001277d.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1277D 16060 bytes

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