Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bd843044092776…

MALICIOUS

PDF

72.4 KB Created: 2020-12-30 11:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0e53514aedbcd43ee45e14a5d583b9fd SHA-1: 997542163dc7ae650816048d07d4d441c082817b SHA-256: 95bd84304409277651878f9fe081ecd6614ebe70bfd774ce934862dede12e025
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document detected as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. No scripts were extracted, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/123?utm_term=dell+inspiron+n5030+ram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470830/normal_5fa7feb5e36c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_5f9cd9795cfc7.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/jolituzoji/casia-_surf_dataset_link.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/nitifajuximi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b1dc19-9ddc-4e7d-9446-4d6c2b20d43e/nivasenasanuzozaw.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/answer_you_back_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/dimamatir.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/digimon_world_dawn_egg_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c23478e9-c470-494b-8227-5dc8d336047f/53280020401.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/fatiwejulogo.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/check_online_punjab_vehicle_verification_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/b._ed_books_aiou.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_off0000ccef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEF 5104 bytes
SHA-256: 053d2d3a33947d3d069fc2eb3595fc42f12dac7be50d03d740b546a1378005ff
font_01_sfnt_off0000de21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE21 12048 bytes
SHA-256: 79436a080d95ed0759059cf7d81d4dd6cd5ddc1a83407a182ae82661c5830132
font_02_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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