Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cb34ffd7ee0ebf…

MALICIOUS

PDF

80.6 KB Created: 2021-04-04 10:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6af7bc32c6ac2c5a4d6eb43a18eecdc6 SHA-1: d82e3a15b3a7b5c43b3535e3342f77fc1f1439ff SHA-256: 17cb34ffd7ee0ebf8e287ba2080c3fa2343486ce81e6bd7e1e89eef32967bb1d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 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 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/strik?utm_term=what+are+the+three+tools+used+by+the+federal+reserve+to+manage+monetary+policy PDF link annotation
    • https://mukeremu.weebly.com/uploads/1/3/4/3/134316251/8344429.pdfIn PDF document text
    • https://jeralizijofuki.weebly.com/uploads/1/3/4/7/134710598/lekad_pexopuxe_lugomuw.pdfIn PDF document text
    • https://zekupepub.weebly.com/uploads/1/3/5/9/135992873/4210201.pdfIn PDF document text
    • https://mewimazekik.weebly.com/uploads/1/3/4/0/134099221/sadakexarofo.pdfIn PDF document text
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/9514136.pdfIn PDF document text
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/3885637.pdfIn PDF document text
    • https://bogibopedazite.weebly.com/uploads/1/3/4/0/134018154/1726fb3.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
    • https://uploads.strikinglycdn.com/files/ab4277d4-c011-4d6c-a78f-f804d4efdb09/white_t_shirt_and_jeans_outfit_male.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/mezuzaw.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/australian_healthy_eating_guidelines_for_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/cohen_and_steers_real_estate_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d237d5a-28a7-48da-86cf-f91e4997afe9/states_of_matter_crossword_puzzle_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/how_to_control_tv_with_humax_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/hp_designjet_500_plotter_printing_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/694f2b37-2700-41cd-a362-44504755ae3c/pobesoligupuleriza.pdfIn PDF document text
    • http://rozipiliwune.epizy.com/understanding_grief_and_loss.pdfIn PDF document text
    • http://mezanemuwagoso.rf.gd/former_earlier_crossword_clue.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/comprehension_worksheet_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/miwuzufowuwivukebarevifo.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/58154045407.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA4 5764 bytes
SHA-256: fa2b7c32311ef5fa755620d34bd57b177e19c2e4048c5ce9f4df1f9f87880292
font_01_sfnt_off00010033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10033 11192 bytes
SHA-256: fe0c826a683dbbd3a774478070487f34bce854fa8d2acd8577e763cf0ff3b637
font_02_sfnt_off0001264a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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