Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d259a16cdbe9b78…

MALICIOUS

PDF

76.5 KB Created: 2021-02-16 22:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7f906eda71ffda5c764c14ead946884c SHA-1: 14fd355976cf18330f68d2c5236406d548926833 SHA-256: 7d259a16cdbe9b7862c2121c938cdc659abb0ae1956a3b63f8f06fe6c40f6ba0
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=chapter+14+citizenship+and+equal+justice+answers In PDF document text
    • https://cdn.sqhk.co/dawezizupata/doN5jj5/totally_free_qr_scanner_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/pemiduwegam/chhyhgf/jevowozugunomuw.pdfIn PDF document text
    • https://wezisaveveto.weebly.com/uploads/1/3/3/9/133999444/7033e58d3d4.pdfIn PDF document text
    • http://noverst.xyz/metric_system_worksheet_chemistrykn8a1.pdfIn PDF document text
    • https://feveronibamuja.weebly.com/uploads/1/3/5/3/135300243/8d7187a3e2e89.pdfIn PDF document text
    • https://zunitaxipef.weebly.com/uploads/1/3/1/3/131398356/7745378.pdfIn PDF document text
    • https://xunijududivajol.weebly.com/uploads/1/3/0/9/130969830/namobiluzimedu_mazano_lawopumunoxom_gefulij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492529/normal_5fcd654a67ce0.pdfIn PDF document text
    • http://instasurprise.online/legion_td_2_worker_guidet9o23.pdfIn PDF document text
    • https://cdn.sqhk.co/tonuviwa/bhgPLhg/where_to_buy_super_shooter_water_gun.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/porn_dvd_trailerr3n23.pdfIn PDF document text
    • https://bobixazila.weebly.com/uploads/1/3/4/5/134599816/gewepovebavej-xawadigaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/ibnidY6/free_fire_diamonds_free_guide_ff_calc.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/lhjDADN/50968573130.pdfIn PDF document text
    • http://chunyoo.com/chosen_song_whatsapp_status05lg7.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/tawosutosuxi/1695301388.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/kosodoja.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/bodyguard_full_movie_link.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/88968017030.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/chauffeur_uniform_store.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/set_builder_notation_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/jazuzetufi.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_off0000ec6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6F 5548 bytes
SHA-256: 6d087c64d3f2219bd646474ab8cac9c48de94fbd9ecfaf049697045ff77e2cff
font_01_sfnt_off0000ff69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF69 10652 bytes
SHA-256: 6a4940ba9e0e31ea48aa2f341061b4dfd6a8c9b01849388849aa7af99ffbcde6

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