Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e4d5969e49683d…

MALICIOUS

PDF

75.8 KB Created: 2021-03-15 12:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5908d1f9d1befeb2735446754c79ea21 SHA-1: da82cb1b388c876f76ad9ca53b77c34bd1ca997a SHA-256: 31e4d5969e49683d5f5f88a6bd7e6cc09415ece3fac791c1f1072f990ce8c3bd
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be related to search results, suggesting a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=desert+monsters+minecraft
    • https://cdn.sqhk.co/latosagax/hXggjcO/darewalevutavewedunag.pdf
    • http://confirmationhelpcenter.com/xafisusegovinukumevoba5asj.pdf
    • https://goxejebifebiv.weebly.com/uploads/1/3/2/6/132682819/46d1a3662f9070b.pdf
    • https://cdn-cms.f-static.net/uploads/4366639/normal_601dddd3adaf7.pdf
    • http://vigastlens.xyz/25021874818zjal3.pdf
    • http://sibuvre.com/summertime_saga_mod_apk_android_free_downloadzl6kr.pdf
    • http://noverst.xyz/whats_my_eircode_address3id9a.pdf
    • https://static.s123-cdn-static.com/uploads/4490752/normal_5fc858f5a1bd7.pdf
    • https://putusura.weebly.com/uploads/1/3/1/6/131606782/buxagisinow_dakuf.pdf
    • http://namedaun.fun/bmp_badge_softwareln76a.pdf
    • https://static.s123-cdn-static.com/uploads/4424364/normal_5fcbe5c99768c.pdf
    • https://cdn.sqhk.co/tezofugowura/jfNfhbr/offline_english_to_spanish_translation_app_for_iphone.pdf
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5fe88159ba23e.pdf
    • https://cdn.sqhk.co/wuzufoxo/cjdr4hi/renumber_switch_stack_2960.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3291e3f2-0059-4b58-89de-c6d6fd86dc81/vitamix_blender_troubleshooting_repair.pdf
    • https://s3.amazonaws.com/lodazojamuva/3338700827.pdf
    • https://uploads.strikinglycdn.com/files/b3c08681-2b6b-48e6-a37a-270725315efd/is_moultrie_ga_a_good_place_to_live.pdf
    • https://uploads.strikinglycdn.com/files/2cb36b5b-2d7d-4664-a25a-d6f349488ca6/ruginaw.pdf
    • https://uploads.strikinglycdn.com/files/56a0f9b0-a761-4f2d-97bb-a2f3547fb603/xiritidevozoviveki.pdf
    • https://s3.amazonaws.com/lanorolowu/recruitment_tracking_spreadsheet_excel.pdf
    • https://s3.amazonaws.com/masevewi/tufaketezawideridazof.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecb8.bin
49730785b3c19dd3ce183db6c6e92bab8095aac5f07a259bcc23e03eae839c67
pdf-font-stream PDF embedded font (sfnt) at offset 0xECB8 4996 bytes
font_01_sfnt_off0000fda3.bin
866299008c29f8276e379251c8cb73d30a8ea0e9aae8968bc5ab7cc4e14dc26d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA3 10096 bytes