Malicious PDF — malware analysis report

Static analysis result for SHA-256 33191174939c4184…

MALICIOUS

PDF

74.7 KB Created: 2021-01-14 05:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3e5ade443de5448f7510f42ac27b1fb8 SHA-1: 09fef2e066110a6a6ddc1db4640ab37524d560fb SHA-256: 33191174939c4184d763e254e69518b1da8b2532acfa13bb7fc1c025998a9cfb
96 Risk Score

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-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://trafftec.ru/aws?utm_term=que+es+la+quimica+organica+pdf PDF link annotation
    • https://site-1194081.mozfiles.com/files/1194081/79410093474.pdfIn PDF document text
    • https://site-1168325.mozfiles.com/files/1168325/silotusimapanibosokamin.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/KwdeVid/lirakasukiwaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408599/normal_5f941a1e5e7f1.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/dhftXie/zidudivur.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/TgjEmib/spaceflight_simulator_pc_controls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389586/normal_5fdf1388b2728.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369646/normal_5ff54db629984.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/UiihhIZ/7590197898.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://s3.amazonaws.com/badodemebo/black_apple_wallpaper_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/24293506916.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/bridge_constructor_apk.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_off0000d765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD765 5464 bytes
SHA-256: 39517c2e96e3846a7ee8de42d28e989589023d255742ea2e0db5fd2253ffd1f4
font_01_sfnt_off0000e9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D4 11264 bytes
SHA-256: 7f07f835a507640db79a16676b0a08b5104ed01b6c15afeecdd1dbf1eed3e988
font_02_sfnt_off00010e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E76 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378