Malicious PDF — malware analysis report

Static analysis result for SHA-256 988df5e892661597…

MALICIOUS

PDF

97.9 KB Created: 2021-01-06 21:47:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b3e9c456a37ce0e7845a7cbc3794a8d8 SHA-1: 8e19484535f0192f76806ef1c0a4c0bf6b8facde SHA-256: 988df5e8926615973d4b239c0bcb07e6faedaba2bbacb3954cd78057aa6dacbf
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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://traffset.ru/123?utm_term=1000000+dollar+sword+minecraft+map+download PDF link annotation
    • https://cdn.sqhk.co/kolokejo/idjeoSB/lumofogidakix.pdfIn PDF document text
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/tuganukodakope_famovagojelu_bedatarabid_fipixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_5fbb1b0daefa5.pdfIn PDF document text
    • https://nodopemewave.weebly.com/uploads/1/3/2/6/132682748/gujesutega.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fbd9ff8f20a4.pdfIn PDF document text
    • https://cdn.sqhk.co/gotirawuz/l5ii5jj/dogs_are_talking_chords.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/degisapemifa/7619778655.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/19430207833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f1b3ec7-2fc9-49c9-bc08-9e31bc7ab3e2/hellfire_citadel_mythic_solo_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/zezumosekaluwepenage.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/root_beer_lab_fermentation_of_sucrose_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ab7ff3-de5d-4f55-84dd-a6359d4c8fad/merekimesizoriliki.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1D 2888 bytes
SHA-256: 6f2a6df54add4989ddb944bf337afdbe14cfe9709f41fdb3d2996e2e7fab70a8
font_01_sfnt_off00012761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12761 5492 bytes
SHA-256: 896f4cb7549086d7befb51b6c8bc61d633c42a817a444c3258221f9129d1b314
font_02_sfnt_off00013a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A13 12168 bytes
SHA-256: 9820363f5becc955435f1879f3c4370f55e9a9e4915d94468fd415503d0a16e1
font_03_sfnt_off00016341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16341 16064 bytes
SHA-256: 8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802

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