Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89e9b98cbc015fa…

MALICIOUS

PDF

83.6 KB Created: 2021-03-27 11:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 91655ebdc10b25b57f4bd874e03f52e5 SHA-1: 8f9cb7364aca2859084425612ccb1505c4d910b7 SHA-256: e89e9b98cbc015fa0513fbe84761350d0dfa80b5e543914c142edafffa45eabb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/award?keyword=apprendre+l+allemand+facilement+pdf PDF link annotation
    • http://kushtanash.ru/medical_surgical_nursing_lewis_10th_edition_ebookqfplo.pdfIn PDF document text
    • http://rekilafemet.iblogger.org/wudezejuma.pdfIn PDF document text
    • https://cdn.sqhk.co/melivetipi/geibsX5/61684548373.pdfIn PDF document text
    • http://stassikorskyi.com/240436987012j5b0.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/w3aD9gj/tic_tac_toe_home_friends_app.pdfIn PDF document text
    • http://futajef.medianewsonline.com/roman_catholic_prayers_in_tamil.pdfIn PDF document text
    • http://lenulari.mypressonline.com/30851688436.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/j_cole_middle_child_sheet_musicfr9uf.pdfIn PDF document text
    • http://itsnat.space/91364919727izmr8.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/jimhbQ1/long_knife_png_images.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/6025c120-9e1e-436d-bddd-0e03f3112d90/what_is_the_beautiful_story_of_your_life_quiz.pdfIn PDF document text
    • http://pewafinapotoja.rf.gd/how_to_say_a_case_citation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59510a86-9923-493b-9e5b-3b477501f701/sig_sauer_mk25-d_p226_mk25_desert.pdfIn PDF document text
    • http://sewuxuta.rf.gd/52742428924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a256eae1-e50b-4f1a-abfc-2d09ba6bd25c/my_beloved_world_chapter_summaries_sparknotes.pdfIn PDF document text
    • http://sofidusujewa.epizy.com/57756702998.pdfIn PDF document text
    • http://sukasorepej.rf.gd/2015_cadillac_srx_luxury_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2af41095-c3f2-46bc-9be2-d4550ac35f2a/what_is_the_introduction_body_conclusion_of_impact_of_technology_on_politics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcfab771-da37-4803-89c3-7443faf9bb3e/autocad_3d_drawings_for_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0ec46e-7b0e-485c-92f8-5554ffce58ab/fl_studio_mobile_12_download_apk.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_off0001057e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057E 5112 bytes
SHA-256: 0a74aee1ec845e3493291785c65a84407980f029c89fd6ef516ee75580d5e0d2
font_01_sfnt_off000116d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D2 13076 bytes
SHA-256: 19bf81e6cc14e3664bba641ab3eac4d0eb2c53b22d587a1bfa56598a635ff989

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