Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1d353cbef35244…

MALICIOUS

PDF

72.4 KB Created: 2020-12-03 03:56:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 469f93666132600a18e02377407c72b6 SHA-1: 1134f565c3cf7ba96cc965bbddcd02047dbfbb04 SHA-256: 2b1d353cbef3524444d97821f0bc8fb1324bb7ef85cbf8dd75fdcf8ac42354db
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to an iPhone case, suggesting a lure to entice clicks on the malicious link.

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://trafficel.ru/123?utm_term=black+and+gold+iphone+11+pro+max+case PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f91d96a91eec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a07fb450-8dc6-445a-a1ff-dc909998de86/clasificador_presupuestario_2020_chile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018260c3-7db6-4919-a54b-078d1a9b9a28/qubool_hai_written_update_10_august_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/the_beat_movement_britannica.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/baahubali_1_songs_isaimini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa22f4b-da9c-4830-b1df-d9107346bb0e/dnyadaki_toprak_tipleri_ve_zellikleri.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/81999239325.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc198bcc6d9645836271125/t/5fc34cabbc819f1cf442d175/1606634667613/famous_footwear_return_policy_no_receipt.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/buvideromunorabavo.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/taribaboxinisiniburimo.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/the_snowball.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC063 5720 bytes
SHA-256: b82b11d09978e1eddca6f36d312e3b7a5b6690bc0a271b19913d13f5c6395cad
font_01_sfnt_off0000d3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BE 13600 bytes
SHA-256: 07596b01d800aea3404b25978d418b1ac3d0096affe0c31d6b871cca8b60c8fe
font_02_sfnt_off0000ff3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3F 16144 bytes
SHA-256: f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d

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