Malicious PDF — malware analysis report

Static analysis result for SHA-256 e533db23c58e6f96…

MALICIOUS

PDF

63.0 KB Created: 2020-12-21 01:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3e1048cd26607d4b5719a494e896e9fc SHA-1: 7a2b154d47a0e507e72d546296e8f18fb4ee8a4d SHA-256: e533db23c58e6f96434ead294f3267f24eae0b0fb55c5987a74376a7398d104c
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to host a phishing page or malware. The document body, though partially corrupted, suggests a lure related to an 'ap physics 1 kinematics test answer key', indicating a phishing or social engineering attempt.

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://traffset.ru/aws?utm_term=ap+physics+1+kinematics+test+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f9ffb2b34a9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5fbc07bef10f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_5fd111429b0f1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5ce038139af037666b757/t/5fcd3e2e5177ea328cceb47a/1607286319915/hindu_calendar_2020_panchang.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30be30a4-00e9-482a-873c-b4bbb477ac3c/27813829513.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/gekuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c20c6739-df7b-4462-b81a-b831c210e113/38088505805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa5f3757-e582-4cbd-8879-faa8b29a3f5b/fafidogavamazekuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/smash_ultimate_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/xitodumuxosutagunivunikez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc295592e34347c704ee7b0/t/5fc648883c02f22b9de28300/1606830216371/bofujunifiwojevevewujowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dcd1ae0-08e2-4927-8aa6-ace09abeb7e1/wudose.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/jizipotupumaxe.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_off0000b0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0EE 5440 bytes
SHA-256: b766659c372fe8c3f473ba2cd41a05f05cff70a889a1552822b5dcba36889b33
font_01_sfnt_off0000c362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC362 1688 bytes
SHA-256: 7589cb9f0e709ca6bdd8af1c38d1552a363c3d0cc30cec28ccea6d03d7941ff1
font_02_sfnt_off0000cbd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD2 10420 bytes
SHA-256: 12d217a4c135465af27a4641745966ef11625e9db3ef2d4c0fcad3df44bb6ecd

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