Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4c62a83d72bd50…

MALICIOUS

PDF

62.9 KB Created: 2020-12-24 04:13:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a88ecb0cc748b902a6c6768f6debe180 SHA-1: d4a187e28bae3c826720759e6a0da88b5222623d SHA-256: cc4c62a83d72bd5081941fdc55ea012e2a1e392dc99a8d84898d8ec39ba32a0a
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'https://trafffi.ru/123?utm_term=atrium+residential+condominiums+albuquerque', suggesting a phishing or credential harvesting attempt. The presence of a visual download button lure further supports a malicious intent to trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/123?utm_term=atrium+residential+condominiums+albuquerque
    • https://pitajuzijos.weebly.com/uploads/1/3/4/8/134885257/88a527ebe44566.pdf
    • https://kenoduzuran.weebly.com/uploads/1/3/5/3/135350653/sexitovufuveded-walodezatinisa-vexifenetuvomeb-kaliv.pdf
    • https://cdn.sqhk.co/sukurorezib/XQgdgg4/cartoon_mobile_screen_wallpaper.pdf
    • https://gilotimo.weebly.com/uploads/1/3/4/8/134899899/138191.pdf
    • https://zevuraze.weebly.com/uploads/1/3/4/4/134440796/movelipanaxoluxikoki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/puretulenuza/19349375001.pdf
    • https://s3.amazonaws.com/taguxif/addition_with_regrouping_worksheets_printable.pdf
    • https://s3.amazonaws.com/zidosozawok/percy_critical_role_character_sheet.pdf
    • https://s3.amazonaws.com/latufenaw/wimesoku.pdf
    • https://s3.amazonaws.com/gavexilatuvitaz/download_full_free_movies_2019_from_zamob.pdf
    • https://uploads.strikinglycdn.com/files/e424f959-a6fc-44b9-a69a-fbaebbfa17b4/my_secret_garden.pdf
    • https://s3.amazonaws.com/xilasisefi/68010971642.pdf
    • https://uploads.strikinglycdn.com/files/d6d80b89-f38e-4cc5-b4d7-30b49b615087/igo8_harita_indir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aac2.bin
71756b9e1729fcd420c1b62086307956498fe2258a2e01257dcaf0ad52a383ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC2 5340 bytes
font_01_sfnt_off0000bcc4.bin
0b0a9b1da946ac1b4a5e14c4452e6d1573f54a64c707411c8202e068d3ca25ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC4 3020 bytes
font_02_sfnt_off0000c94e.bin
56ca51db337fcdb20801f431dc1047f3095c207471b02be89e2d495f5ddd19c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC94E 10392 bytes