Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c62b3a425f2ffb2…

MALICIOUS

PDF

97.1 KB Created: 2021-03-24 23:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 721be0e6cf672a8311b986662bc2a8d8 SHA-1: 7e48ed47af7bce99c3b5a6c637739a76022202bb SHA-256: 6c62b3a425f2ffb253989116abb6d96529f6e71d9de5e2b3e05f340d34888109
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting a lure related to programming tutorials. The embedded URI points to a suspicious domain, likely serving a malicious payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/award?keyword=scratch+programming+tutorial+pdf PDF link annotation
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/zubogiluwaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5fdbe0561ab2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463565/normal_600efa0f3fbc3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410448/normal_5fed4981114a1.pdfIn PDF document text
    • http://ragomuzaku.iblogger.org/pdf_books_download_quora.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/algebra_1_solving_equations_word_problems.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/70969973431.pdfIn PDF document text
    • http://jonezuno.22web.org/leveling_zone_guide_classic_wow_horde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_602191bf5f7cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487386/normal_6041ace0d6f81.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/657424.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://s3.amazonaws.com/dubiditiginowo/how_to_be_uncle_iroh.pdfIn PDF document text
    • http://rinexijirava.rf.gd/ledoxakibemanavi.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/xomeditujavuru.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/jaxuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9772a101-0025-4549-a46b-f75e52a8b1a5/sepamewa.pdfIn PDF document text
    • http://suwedafi.epizy.com/how_to_use_viper_remote_start_on_manual_transmission.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f996691-c2f9-4541-aa4d-20a43726430b/matofokotuxed.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/assessable_spouse_election_form_sample.pdfIn PDF document text
    • http://buzanone.epizy.com/fojumesitenisod.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC6 5260 bytes
SHA-256: b31535269c69a300f25b73fa3806205fd188f6ab4928eb35304ed8742f6a3914
font_01_sfnt_off00012f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6C 10572 bytes
SHA-256: 5cfc70a81b0afcf94d722ecdc93186717a987a1d9560ccd7f6e3960c7e6faa01
font_02_sfnt_off000153a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153A3 16060 bytes
SHA-256: d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72
font_03_sfnt_off00016838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16838 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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