Malicious PDF — malware analysis report

Static analysis result for SHA-256 65008e2f5eaaefac…

MALICIOUS

PDF

86.0 KB Created: 2021-03-23 10:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 61da13ff95d9016f21bd10a51dae0b1a SHA-1: b0d5fff994a918110ac253afe3402e28df7db651 SHA-256: 65008e2f5eaaefac5c67b245a7d65df49447c2321a4e95b0194885c6dbba8e0d
186 Risk Score

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 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wix?keyword=all+in+mark+batterson+pdf PDF link annotation
    • http://1cats.space/34282682150l8u61.pdfIn PDF document text
    • https://reravonox.weebly.com/uploads/1/3/1/8/131856904/kadamixiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/wufaluvete/haKDOJg/27265313019.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/vidigudibonodir.pdfIn PDF document text
    • http://deflecfcvy.best/117938457713ce9h.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/ijheDCv/kibexubijisipulezif.pdfIn PDF document text
    • https://cdn.sqhk.co/mamidusidozu/Gb4icjj/sisters_hospital_visiting_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/gcihAyh/xipafajesekokeri.pdfIn PDF document text
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/746423.pdfIn PDF document text
    • https://cdn.sqhk.co/tomibigi/hdihigi/80614756705.pdfIn PDF document text
    • https://jegetujo.weebly.com/uploads/1/3/5/3/135300600/142282.pdfIn PDF document text
    • http://optalpha.com/5316560560615rae.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/206144596089my76.pdfIn PDF document text
    • http://static-get.top/xemugekebatububogerkv6q.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/gePhid5/nice_guidelines_diabetes_in_pregnancy.pdfIn PDF document text
    • http://afterdealer.pro/verizon_home_router_g3100_yellow_light3ssh2.pdfIn PDF document text
    • http://woodbonus.net/rainfall_data_analysis_software_free_download08w0m.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/Ohgjc2G/shelter_cove_campground_odell_lake.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/ig5qijs/how_to_get_edmodo_class_code.pdfIn PDF document text
    • http://academic-club.ru/bomoverefesiwagibx.pdfIn PDF document text
    • http://wewerizov.iblogger.org/miwolufojenutogapizaperi.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/ahciiam/city_sniper_shooter_free_shooting_games_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/TKijJnV/cafeland_apk_mod_1._9._2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jepuxaribizoze.rf.gd/sandisk_sansa_clip_jam_8gb_mp3_player.pdfIn PDF document text
    • http://kepojuwewi.rf.gd/membrane_structure_fluid_mosaic_model_worksheet.pdfIn PDF document text
    • http://pugagewuda.rf.gd/92756514150.pdfIn PDF document text
    • http://poluwusafoge.epizy.com/mojujufuw.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_off000113e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E7 5380 bytes
SHA-256: 7bc506dc54b26aa1b8c8b0bd119dbee8c9d31a83019d2b236b6a9852be58802b
font_01_sfnt_off00012613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12613 10644 bytes
SHA-256: 2f7e781b4ad639d81711015273c78400d4a67318f032f7b6e666d69d27498806