Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d8ecaa2246dc21…

MALICIOUS

PDF

66.6 KB Created: 2021-04-15 14:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 79eba821027b23d020f5acf141cec45d SHA-1: b24031f653ccdad5c3c8d3addb1876a21b0daf4a SHA-256: e8d8ecaa2246dc21c2b93a9b05567954d1fdc571b0fbfb8b6ec9a7db50ac0d14
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 0.9997

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 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://dugedepap.ru/strik?utm_term=fringe+1.sezon+indir PDF link annotation
    • https://zemokozovoxepuj.weebly.com/uploads/1/3/0/7/130776726/jikeroges.pdfIn PDF document text
    • http://useraisins.pro/janepivizubejarezopewujs4ket.pdfIn PDF document text
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/lubetonelesoxiribo.pdfIn PDF document text
    • http://kihepc.xyz/7341141150lc2pl.pdfIn PDF document text
    • http://medtechnika1.ru/which_sector_is_highest_employment_in_gdpg34l3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_60356b58071b6.pdfIn PDF document text
    • http://naturfresh.space/griswold_family_christmas_castyvvmx.pdfIn PDF document text
    • http://iminn.ru/balkar_sidhu_song_chan_vel0ykq.pdfIn PDF document text
    • http://davorivugexawu.sportsontheweb.net/rebolarilureribalabuxi.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/75885896444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_60125d4b15f26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_6037614450466.pdfIn PDF document text
    • https://sagotudiwesuw.weebly.com/uploads/1/3/4/3/134340488/76020aa4a80ef6.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/frampton_modern_architecture_a_critical_history.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vepisesilutez.epizy.com/english_to_telugu_dictionary_free_download_full_version.pdfIn PDF document text
    • http://rojuzejuleg.rf.gd/lean_six_sigma_certification_online_india.pdfIn PDF document text
    • https://3ced707c-20bd-49bb-93f1-edb15be4e391.filesusr.com/ugd/e90305_a5e447a7ac0342849d5d8716bc8dfb93.pdf?index=trueIn PDF document text
    • https://2061f665-9309-41a6-981d-137229ee7e60.filesusr.com/ugd/eb2fe6_7c4114d8b57c457da88eacc9951985ce.pdf?index=trueIn PDF document text
    • http://nonosolagosev.epizy.com/guidestar_search_990.pdfIn PDF document text
    • http://dokaxemimagi.epizy.com/nuvijegokad.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_ff8624a568884d8ebc38110463eb3103.pdf?index=trueIn 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_off0000c780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC780 4840 bytes
SHA-256: f77dc5070b51da5cbc8e76564d3dec9eaa3525bed3a8d0c824520ffea59f6bd1
font_01_sfnt_off0000d81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81E 11100 bytes
SHA-256: 2c3accbd28ffbd29917c2c5da06eaa46b0b9a2a63fef6ed94829190671c41460

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