Malicious PDF — malware analysis report

Static analysis result for SHA-256 1238af0d4cf212e5…

MALICIOUS

PDF

347.1 KB Created: 2021-02-14 15:31:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1b781bf16b75d49ae880f6f612b393f5 SHA-1: 6aa92dbe4158d7dbfaa1587a94a539c8dfdf0ad8 SHA-256: 1238af0d4cf212e5bc3d6127529d4c4f19275b2599fd9610f2979c439e909625
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 0.9906

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://baarspo.ru/123?utm_term=fifa+apk+mod+download PDF link annotation
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/bbfea99a.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxovunevo/xDidjc6/polishing_3d_printed_metal_parts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470221/normal_6014f77a4ea7b.pdfIn PDF document text
    • https://vukezozonobobex.weebly.com/uploads/1/3/1/3/131383599/rusini_nukunugexonu_miwav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5fd2aa34201ab.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/Sn1idhe/32146043763.pdfIn PDF document text
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/9627120.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378381/normal_60045aa631ef3.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/9nZEjgT/cruise_ship_tycoon_roblox_update.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fe7bcbdbabb1.pdfIn PDF document text
    • https://cdn.sqhk.co/xexanodu/gV0KhjN/fishing_online_shop_deutschland.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kimone/bebelupido.pdfIn PDF document text
    • http://subejev.rf.gd/gabovazitilapovupevigu.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/sixenulixagojafebad.pdfIn PDF document text
    • http://gewagopixinilu.rf.gd/pojarazazarigimazemuroni.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/66079815768.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/joxolisomivavemexosoz.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/masked_singer_lion_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/beginners_guide_to_chakra_meditation.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/audi_a5_sportback_2012_owners_manual.pdfIn PDF document text
    • http://litopuputorer.rf.gd/free_vpn_android_china_server.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/28537182222.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00052212.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52212 33968 bytes
SHA-256: 30ea9673c304c5f8686755cbb883672864206f64647beecc7964e25735650869
font_00_sfnt_off0004d8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D8CB 5024 bytes
SHA-256: 9fff6d8615e912af2366b822072b1373729c0a6071990cec9d8a0fae687cfa02
font_01_sfnt_off0004e9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9F3 18796 bytes
SHA-256: 801400ec1f664a4f433c9525977eeda56b4566fc30ed031d087c2be1f18d9c0a