Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1edb108511deba…

MALICIOUS

PDF

103.0 KB Created: 2021-03-14 12:30:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 599beef935b77b5cf508e35856d99337 SHA-1: e03705e9d6db2c5ac00f98dec4735c8312e33934 SHA-256: 1e1edb108511debad95c5da8ad43555d3fa743486d9b2bb34a54c170988f34dc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'reality testing pdf'. The presence of an external URI indicates an attempt to redirect the user to a potentially malicious site.

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://golowaki.ru/award?keyword=reality+testing+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404964/normal_60152a3c58270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5ff2563de5c19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_603dfb57c0c60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465393/normal_5fef0f5de5c3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530070/normal_60119afdd8f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_5fe6fa264a2a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fcb3fcea0595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484814/normal_5ffab04612e36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480402/normal_60292f68f2c90.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/a132c5b4-4309-4b3c-a35a-0bd7d6facd9c/milk_and_honey_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60cf153c-9ab9-4d92-9c7f-a1f4c70ba95d/nespresso_vouchers_uk.pdfIn PDF document text
    • http://futezazunup.rf.gd/acca_f2_kaplan_exam_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc36051-e6e8-4b01-bb42-19411785538b/how_to_resign_as_trustee_of_an_irrevocable_trust.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79102f14-a4a8-4d0f-b87e-a3f3a6a0b5d7/tone_it_up_cinnamon_roll_protein_muffins.pdfIn PDF document text
    • http://lisudanuzi.epizy.com/nunefixajupi.pdfIn PDF document text
    • http://vogojitipam.epizy.com/busevudepimigovubupotitez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efde7822-5935-4b49-920d-3a43d475036c/letra_y_acordes_de_ven_seor_no_tardes_mas_ven_seor_jesus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0f4f57-c547-449f-b33a-fe32e7207fc5/hair_clipper_set_sale.pdfIn PDF document text
    • http://lafumiseweno.epizy.com/mechanical_gear_types.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafea769-4899-43b1-9120-8337a392cf96/55613931928.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_off0001401f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1401F 5224 bytes
SHA-256: bff6cf26e9dca817019212fc733c27490329433d2d3271e757bac2ca47936305
font_01_sfnt_off00015212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15212 11464 bytes
SHA-256: 66b19a54fc25c40af9241a7544e1b205cd8fb6f996f30f6ce880498720d7445c
font_02_sfnt_off0001791a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1791A 16148 bytes
SHA-256: 43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7

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