Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac5414370447c35…

MALICIOUS

PDF

86.6 KB Created: 2021-03-14 06:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 21761a354d3e4a33b94744ffb8d1e6be SHA-1: fb4a8ef204bdab2910e9c8c9ae5ca08a2f0f8381 SHA-256: 3ac5414370447c352b968716ed9b1b75ae89b6983cd04232e42070ccc8c7a213
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'soxebez.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a 'bad blood novel pdf'.

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://soxebez.ru/award?keyword=bad+blood+novel+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478148/normal_6047a25192a3b.pdfIn PDF document text
    • http://muvirire.22web.org/convert_base64_in_java.pdfIn PDF document text
    • http://lezojivabuxik.22web.org/94590209045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_6034e47e2831e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_60121b749ec53.pdfIn PDF document text
    • http://fejazeluxuz.22web.org/alice_in_wonderland_tagalog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5fff238d5fcb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475559/normal_6026f29a20aae.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://uploads.strikinglycdn.com/files/cfe63dd5-65c6-4e56-853e-c3a63b4e3fb3/bartletts_familiar_quotations_17th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45760299-4da0-44bd-ab89-4d52bedfcfa5/guzidiromiwuzamuporurozer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c2de1e8-0066-43c9-935d-a83494f51e76/43789442932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3596544-693d-4c44-a9f4-a9d4557a90ce/kitchenaid_superba_microwave_oven_combo_kaw38avm726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74390d62-1ecc-442a-8a5d-7b0f77c96718/parrot_ck3100_fitted_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d93dbf7-6784-4687-af88-95936416201f/will_there_be_a_new_diary_of_a_wimpy_kid_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557003ff-eb1f-4d4e-b4cc-d4ab2a8fbeb6/fobezexiw.pdfIn PDF document text
    • http://filulakakinu.epizy.com/how_to_clean_nespresso_vertuoplus_with_vinegar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354baf71-a226-489b-8635-f4022843a2fa/2019_tesla_model_3_price_used.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f4244a4-8a4b-47ab-967f-b4ee2871f917/17560885185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362e5ac7-9613-4d71-96d7-9d2070f98546/how_to_use_yamaha_mg10xu_usb.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_off00010bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBB 4668 bytes
SHA-256: 4d8b66bb53d73f8c5f152bae57996ff62e5f8aa7f127b8492911dc2c88c10f7b
font_01_sfnt_off00011ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA8 10516 bytes
SHA-256: cb0db64539346ff56ec88964a47d72b3543167d4ee132f5bd983964699cf94ae
font_02_sfnt_off00013f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F9E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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