Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff673071cf4629e1…

MALICIOUS

PDF

498.0 KB Created: 2021-04-13 21:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 18e1e060dd327269d32591fe16990faf SHA-1: 5194725dac692584593abcf7dd17bc7938538653 SHA-256: ff673071cf4629e1863974ec37f5de48e98bbc20f317b86a26bd57a43169a435
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, includes text related to a product review, suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of external URIs and the ML classification strongly indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8162

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/strik?utm_term=ruger+air+hawk+master+review PDF link annotation
    • http://kumajamefe.getenjoyment.net/79995786641.pdfIn PDF document text
    • http://rp-youtube.fun/ai_dungeon_scenario_tipsi7wys.pdfIn PDF document text
    • http://petajofap.22web.org/las_auxinas.pdfIn PDF document text
    • http://busibear.com/paxewogajibv8fdx.pdfIn PDF document text
    • http://winidovatagega.22web.org/reported_speech_business_english_exercises.pdfIn PDF document text
    • http://pristav.pro/star_wars_ahsoka_white_lightsaberf4ky6.pdfIn PDF document text
    • http://femusawar.iblogger.org/isolation_of_fungi_from_air_lab_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/bsc_1st_year_books_free_download.pdfIn PDF document text
    • http://rixuroruwe.myartsonline.com/access_database_2020_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/405634114.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/synology_ds1817_datasheet.pdfIn PDF document text
    • http://tapipawobux.rf.gd/aquelarre_mega.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/rheem_gas_furnace_prices.pdfIn PDF document text
    • http://wigezenefibi.epizy.com/bandelette_urinaire_interprtation.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/27124476307.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/98504658467.pdfIn PDF document text
    • http://kerizow.epizy.com/29501777189.pdfIn PDF document text
    • http://wapudajikipidem.epizy.com/dell_latitude_e7450_wifi_driver_for_windows_7_64_bit.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_off0007555e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7555E 5288 bytes
SHA-256: f2ee778a89812165f35bdd79452024c590b12b99d839058788c06c70dbacb942
font_01_sfnt_off0007674a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7674A 4284 bytes
SHA-256: 681444574658f47e8a088e51be8472bb5147d323249e3d9acb2d57ea34902ffd
font_02_sfnt_off000772db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772DB 13500 bytes
SHA-256: 20194540795f5ee7d3db7c14503dd244d50a34d70954a33f1f803b8216215007
font_03_sfnt_off00079f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F25 16304 bytes
SHA-256: 0a2507360a40dd56b84230664db2b3a2689cb34b0aa642599c8245950ba374cb

Open this report in the interactive analyzer, or submit your own file for analysis.