Malicious PDF — malware analysis report

Static analysis result for SHA-256 876a2ef4f89b2f25…

MALICIOUS

PDF

79.4 KB Created: 2021-03-07 09:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: c6d8b206f640495a9c31253b4689d483 SHA-1: 0f0b02ee9133e1429e9e68ad128307e806fa100a SHA-256: 876a2ef4f89b2f25aec6ade773c570033ad9f4eb5216d7b775e64737a24a22ee
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attempt. The document body, though heavily obfuscated, contains keywords related to search queries, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://jumiwimov.ru/wix?keyword=young+justice+aqualad+voice+actor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409409/normal_600173c9c0759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_60192919a6feb.pdfIn PDF document text
    • http://regetun.22web.org/electric_pressure_cooker_buying_guide.pdfIn PDF document text
    • http://prod-fruit.space/black_and_decker_toaster_oven_specificationss80sb.pdfIn PDF document text
    • http://itagreen.fun/19688061187opziw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_60248bdf72597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_6032a342c3034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393035/normal_6006af14c9e60.pdfIn PDF document text
    • http://xigegojaliku.iblogger.org/raxasiliwusabore.pdfIn PDF document text
    • http://negozio50sconto.info/assembling_and_disassembling_of_system_unit3ghgj.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/dikobepibelun/56555155946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85a8b546-3293-491d-852c-c6cc323dcedb/point_of_view_writing_prompts_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92a94ac-abd8-425f-a80f-e5b1bbcf5860/nolidovu.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/fofaromez.pdfIn PDF document text
    • http://xodojes.epizy.com/kadoxanosawewopexowo.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/recorder_karate_2_login.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/86416482492.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/network_android_games.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/free_audio_frequency_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/12767961613.pdfIn PDF document text
    • http://rebipilu.epizy.com/68385889132.pdfIn PDF document text
    • http://govomasoleva.rf.gd/duwadojeliwokuzodofamebuz.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/cabal_mobile_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/ssc_mpr_admit_card_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/72314699599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54bcedc4-a7f1-4e64-8206-29eb2178a487/the_man_in_the_high_castle_ending_quora.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95C 5332 bytes
SHA-256: cc9bfb44bdc107819a89b2f1ce0edf3ecc866c86e3106c352dcdb3e29b006361
font_01_sfnt_off00010b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B94 10684 bytes
SHA-256: e8aa68df87be8136441eae14d85064f88ff5d663be7ed1c4fedc148b81c1d87c

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