Malicious PDF — malware analysis report

Static analysis result for SHA-256 b740302479d13711…

MALICIOUS

PDF

73.6 KB Created: 2021-02-28 04:30:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 047f8a184842b5506c9662a146c43225 SHA-1: 4591d871f3ca758761adc040ad34d1157cab6bd9 SHA-256: b740302479d13711941e975a7b305668c76fca3ec33fba7f246ce608f1a80caf
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://xajibur.ru/123?utm_term=accu+chek+performa+nano+battery PDF link annotation
    • https://cdn.sqhk.co/rigizisojix/bhdHZia/green_papaya_recipes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449622/normal_5fedc72582a44.pdfIn PDF document text
    • https://jinezivatu.weebly.com/uploads/1/3/4/6/134687025/kebom.pdfIn PDF document text
    • http://ig-about.net/nonodivewitorujuruuj6d.pdfIn PDF document text
    • http://chelamela.org/75904054923554ju.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/illinois_prevailing_wage_rates_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392193/normal_5feb5d1bebe36.pdfIn PDF document text
    • http://mishgen.com/xuwumurogiwodipozowor2mc3.pdfIn PDF document text
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/fc48874c8a4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489596/normal_5fdd8d2f3a253.pdfIn PDF document text
    • http://winoraama.site/man_in_the_high_castle_season_2_episode_6_cardc66y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457302/normal_5fcd3551c44d8.pdfIn PDF document text
    • https://texexodova.weebly.com/uploads/1/3/0/9/130970004/f1a2f439f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gapivegek/apa_reporting_t_test.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/how_to_factory_reset_asus_router_ac5300.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/how_much_does_a_small_square_bale_of_straw_weigh.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE255 5340 bytes
SHA-256: ad9c3ec2df3fcb1e3709d82b96bc4155f3a7a204a36e634bac3d6b81dfdd85c9
font_01_sfnt_off0000f461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF461 10960 bytes
SHA-256: 6fe5a2ee0025f6902df84aaf942076dce117985bb4772a9d7af22ff7479a350d