Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a1c3b95da19c82…

MALICIOUS

PDF

75.1 KB Created: 2021-02-22 20:47:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a357da156d12df8ca8b908aa87a7881c SHA-1: 54039d92e3792d0a1468650e0aba1f4b0d633368 SHA-256: 85a1c3b95da19c8250aa0b672d044388847533b769ba7730395315b68070245f
156 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 0.9997

Heuristics 5

  • 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.
  • 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/123?utm_term=will+crib+sheets+fit+pack+and+play PDF link annotation
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/moxawuleru.pdfIn PDF document text
    • https://fofumizuzel.weebly.com/uploads/1/3/2/7/132740209/mixugaxeze_perad.pdfIn PDF document text
    • https://vunakeba.weebly.com/uploads/1/3/4/6/134623580/6540349.pdfIn PDF document text
    • http://mif-smeh.space/car_driving_school_simulator_mod_apkbmiwn.pdfIn PDF document text
    • https://cdn.sqhk.co/jalafimimodo/hjgc5ge/xowiwape.pdfIn PDF document text
    • http://circleshtang.xyz/toyota_verso_service_manualzuvxv.pdfIn PDF document text
    • https://bukodebavuv.weebly.com/uploads/1/3/4/6/134657655/1134688.pdfIn PDF document text
    • https://cdn.sqhk.co/zolaxadivowe/ibiagcY/jizafalakogilawebiwezivib.pdfIn PDF document text
    • https://ninijaliwejito.weebly.com/uploads/1/3/4/3/134350726/8902780.pdfIn PDF document text
    • http://qrastenmap.online/2008_jeep_unlimited_sahara_reviewsql01t.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/fakedufasalokoseradipor4ok52.pdfIn PDF document text
    • http://mexuzekinukogip.iblogger.org/xakubumek.pdfIn PDF document text
    • https://cdn.sqhk.co/miviterul/ieHYiic/nawatitajemozofusebafa.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/buwosevax/cowboys_and_aliens_full_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/68946349827.pdfIn PDF document text
    • http://zatugawaxevi.rf.gd/mubazegemijipojadetewet.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/wogozuketezufulazadokod.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/3ds_max_tutorials_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/69948155926.pdfIn PDF document text
    • http://lujotuxubegu.rf.gd/angular_6_dashboard_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/android_studio_flutter_command_not_found.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE606 5564 bytes
SHA-256: dcdf9822a30a00346c3d9ba6fdf5a50a50f8f594ea8c910281baddbc3299d285
font_01_sfnt_off0000f8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F6 11288 bytes
SHA-256: 71473a18c93609f3fcfb5a4a242921c75bfd4685016732142698ee24956f3dbe

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