Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e7639950800864…

MALICIOUS

PDF

75.9 KB Created: 2020-12-19 03:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e89e8bf10a491b5f69877698a177c9fa SHA-1: 99687148e9a71d221808f2bca9941e6a0cb33386 SHA-256: c1e7639950800864f4d7f336e85cabacd74f3d3d276ca4b96c1c22547b56b0a1
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 0.9998

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 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://trafffi.ru/strik?utm_term=area+of+shaded+region+worksheet+answers PDF link annotation
    • https://musuvawe.weebly.com/uploads/1/3/4/5/134528527/sarapa-mewobas-fesop.pdfIn PDF document text
    • https://sivesasa.weebly.com/uploads/1/3/4/6/134669324/dogebuz-wokibikodugeti-gedikedovo.pdfIn PDF document text
    • https://lewagezu.weebly.com/uploads/1/3/4/3/134369469/vinatumiko.pdfIn PDF document text
    • https://tapidokebijimub.weebly.com/uploads/1/3/4/5/134577153/zojukinurirajukuz.pdfIn PDF document text
    • https://zidivopopa.weebly.com/uploads/1/3/4/3/134373798/d86b1b7.pdfIn PDF document text
    • https://moxitimufetumo.weebly.com/uploads/1/3/4/0/134040580/femonezarazuj_pubebo_memifagijujofi_ruwevu.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/regagifo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5bf0a2757459be32ffe/t/5fcc44515d2e6f3bda30c405/1607222354325/xufupiwojo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c5bbd26ff1194f9548e9/t/5fd05f705347e801a81f1a8f/1607491445116/air_line_paint_sprayer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bab78738-7135-457b-902a-31c71364ba18/20914159029.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd3141a24c1c27cb530c81/1606234433933/coaching_agile_teams_lyssa_adkins_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc3affb-e4d3-4a46-b3cd-c4d0f28cc4a2/polynomial_long_division_worksheet_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc68a6da8793968642f1420/t/5fcf9dbf1901dd4d2edbf7ab/1607441855708/hillsong_worship_best_praise_songs_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eb79e5c7695ca99bb922/t/5fc18e459b1ed03538170307/1606520394798/this_is_anfield_twitter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d2420a2757459b04ad16/t/5fcaf1f764036b614383aa11/1607135735824/vamezukarajupo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55f48bdb33045eee0080d/t/5fd13f9624bc897ab6539a57/1607548823752/zombie_castaways_hack_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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off0000ecdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDF 5280 bytes
SHA-256: 946dc74298d8c6fe10f0f9791b812b2db39124473a4db3104558450c9a0fbed4
font_02_sfnt_off0000fee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE3 9812 bytes
SHA-256: 10eed4f0107a167d13bbc02381ddf909b2f62bfe674cde75952047aa384b1f20

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