Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4986adf79da5252…

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 17:49:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 770d17d186c8fb2963cc95382ec41622 SHA-1: a784ad06d1baefd54896a0534c264657dad9ce2b SHA-256: a4986adf79da525235ccb490a476eb033c9ed5b6f7e61d96aab95ce6d4259e6b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a product search.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://leonvi.ru/award?keyword=hayward+pool+chlorinator+wrench PDF link annotation
    • http://ribavid.medianewsonline.com/57721041036.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/j24DURT/wedon.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/hfhcZji/las_vegas_tournaments_basketball.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
    • http://pulutugorivexek.atwebpages.com/adidas_watch_all_black_jersey.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/bhu_answer_key_pet_2015.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/vifewasawubovenoxeb.pdfIn PDF document text
    • http://zuputes.atwebpages.com/el_manual_de_supervivencia_escolar_de_ned.pdfIn PDF document text
    • http://resuzebapaluga.rf.gd/barnes_and_noble_education_annual_report.pdfIn PDF document text
    • http://tuwemajufa.rf.gd/acronis_2017_trial.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/92270299061.pdfIn PDF document text
    • http://jidoxib.rf.gd/cks_guidelines_hirsutism.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/android_vs_iphone_which_one_is_better.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/83494807299.pdfIn PDF document text
    • http://vigopul.epizy.com/moguvem.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/24720841497.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/ernest_hemingway_books_in_order.pdfIn PDF document text
    • http://damexodawu.epizy.com/mawujagepagolokiruku.pdfIn PDF document text
    • http://wufalejopasedor.epizy.com/schlage_connect_touchscreen_deadbolt_installation.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 4924 bytes
SHA-256: 3bc6720dd7bd20900e1b4d12942d49a028772a9324093141f56e03a0a9ba847c
font_01_sfnt_off0000f307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF307 11028 bytes
SHA-256: fbcd8be459cebdf1002d7e1d11287f93d0060c160478e4f1abb9c08252a4f6be
font_02_sfnt_off00011857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11857 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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