Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46656f83707f693…

MALICIOUS

PDF

283.9 KB Created: 2021-03-24 19:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3f4bea88f35d66fbd35ec3ad1cc6ea3f SHA-1: 2f178d2fae9e432ab07447a789631993f3cb5fb8 SHA-256: c46656f83707f693ab69d678896f9a159b90ee508799368a220b7262d2bc8d13
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which points to a domain associated with malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a popular song's guitar tab, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://golowaki.ru/strik?utm_term=la+la+land+mia+and+sebastian%2527s+theme+guitar+tab PDF link annotation
    • http://moratelusubuzol.22web.org/numbers_1-_10_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/hix16jd/miderakupokibunubowixixe.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/aghggY2/domino_s_pizza_near_me_menu_prices.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rulufegelaz.rf.gd/badapenevazabin.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/52154076921.pdfIn PDF document text
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_3821b8f248b94aaf929d7f75ea8df7e3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetituri/gunakoxematev.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/84084419126.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_83200666394a4fda838c87bc32708916.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/najipavez/assetto_corsa_competizione_patch.pdfIn PDF document text
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_f6b9ba51a5e748f195a8e67bd5b00688.pdf?index=trueIn PDF document text
    • http://fizetoxeloxiti.rf.gd/69262158172.pdfIn PDF document text
    • http://jepoxoxe.rf.gd/cdf_and_formula.pdfIn PDF document text
    • http://pomadepoxe.epizy.com/amma_tamil_songs_audio_free.pdfIn PDF document text
    • http://dikawuferiwa.rf.gd/add_appendix_latex.pdfIn PDF document text
    • https://dcaf3b11-26f0-4e60-b842-01857b8e1462.filesusr.com/ugd/2df88f_dfb30145286142a28e521b5c4964f434.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_4758ffb6a9834546b15d950bd461ebce.pdf?index=trueIn PDF document text
    • https://ba428ff1-d53d-4eb5-bdb2-cc960067f420.filesusr.com/ugd/7041e4_de2a44c25565414cb4a8e0f692b594b3.pdf?index=trueIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_4588c8bd6b334a7aacdaee67d158b9c7.pdf?index=trueIn PDF document text
    • http://rumajajoneder.rf.gd/pokemon_ultra_moon_battle_tree_guide.pdfIn PDF document text
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_f44c15b5aecc464eb53e31275bb55dae.pdf?index=trueIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_41b0c3f5bdd94ff2b18d69da2f161636.pdf?index=trueIn 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
stream_002_off000107f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x107F5 274652 bytes
SHA-256: e3c56b02343c174eb1f03fe1aba8cd3a39ca28ebda18019841fb60a81f78e9bd
font_01_sfnt_off000427d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x427D3 5356 bytes
SHA-256: a225265b30b45fcb6d5f2fb5bee0224b02aa758a9722606ded18f2bd940a3565
font_02_sfnt_off000439dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x439DC 10628 bytes
SHA-256: fa7b4a01c84caf7c0caaf54e7ad1ae1c792fd7476d28b2a705945e52fd182867

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