Malicious PDF — malware analysis report

Static analysis result for SHA-256 b798e607688075ca…

MALICIOUS

PDF

69.2 KB Created: 2021-03-04 14:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d94d2faee47aa1bfa5deb2c42b94d1c0 SHA-1: 4c244363f56b949229f31910b03db34a33f1948a SHA-256: b798e607688075ca59c48539d2d91c6778636bd6b1eaabb4d2921db9c8c77956
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to 'https://bologen.ru/wix?keyword=pearson+chemistry+chapter+6+assessment+answers', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to educational content.

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://bologen.ru/wix?keyword=pearson+chemistry+chapter+6+assessment+answers PDF link annotation
    • https://cdn.sqhk.co/tamikoveken/igjehha/jusape.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/tft_item_build_sheety6p7s.pdfIn PDF document text
    • http://skameyki.club/falling_in_love_netflix_wiki5eycb.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/zuzinivala.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/how_to_reset_uconnect_ram_1500.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/0kFbgg0/blackmagic_micro_studio_camera_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/dedatemaran/hgqgejj/how_high_do_you_usually_go_parasailing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a352274-7bea-41d3-91c1-dd99e7a960aa/batekerakamekewivefa.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/cell_structure_and_function_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/deterrence_theory_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/graphicriver_flyers_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffc9feee-2804-44ee-8be6-6b41cb6be068/617405917.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/acknowledgement_form_svenska.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/the_beautiful_and_the_damned_quotes_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/easybib_apa_citation_format.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/risesose.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/fefozodulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f4383f-2109-4ccb-9f78-94eb1605a42c/gy6_50cc_engine_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/nancy_drew_season_2_episode_1_recap.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_off0000d20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20F 5492 bytes
SHA-256: 679f286624550d96674363f02f7dde37baf65087c365c002b6094a89d38eeb5e
font_01_sfnt_off0000e4a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A9 10172 bytes
SHA-256: 60506ce7a9cfb91da845292249124c8d28cf6d4c1a0b71a70b9c62510c7f69b5

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