Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b18a808a9e081a…

MALICIOUS

PDF

96.2 KB Created: 2021-02-19 16:29:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a46e48be22dd7cbc6d245446a31a3b32 SHA-1: ad4680eee5ec80425b61038674ca8b890f0c91b3 SHA-256: 56b18a808a9e081a53211aefc53c837efdd602a333d33bccaf3971a8a1a69624
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'Bowflex xtreme 2 manual' and is associated with an external URI pointing to 'seumenha.ru'. This suggests a phishing or social engineering lure to trick users into visiting a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=bowflex+xtreme+2+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5fc5efe1e3fa0.pdfIn PDF document text
    • https://cdn.sqhk.co/dexasubu/8pCrOjf/knighthood_list_2021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_600549a5dee43.pdfIn PDF document text
    • http://hookup755.fun/cru_restaurant_newport_riprhdz.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/hahdfKu/carrot_cake_recipe_video_download.pdfIn PDF document text
    • http://milanomodaitaly.site/list_of_danielle_steel_books_in_alphabetical_order2ueip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503787/normal_5fdbd1fd71d40.pdfIn PDF document text
    • http://harkateine.fun/sufitikoginupexiwuwazi0mh3.pdfIn PDF document text
    • http://boxberry-24.cc/eastwood_tig_200_manual6uhf9.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzokikili/3wzKwjb/36619535809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418786/normal_601065a2f0d9a.pdfIn PDF document text
    • http://linza.media/acls_post_test_answer_key_20202obhk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448330/normal_5fec0a838b10a.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/lolijexejomak/calyx_point_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/gluconato_de_clcio_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/lekedowaxazegama.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/avery_3381_postcards_index_cards_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/la_perla_secreta_mary_balogh_descargar.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_off00013ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EBB 5076 bytes
SHA-256: da886d5cf69cd2a054f05b50ebca1e8e4875b2adc2c815f047cf7321f760fd73
font_01_sfnt_off00014fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FFF 10488 bytes
SHA-256: 364fac39241e954f2308b79c5212e9a966dc0dce2653bed90f6517c865a0f9e3

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