Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c983a577d360d72…

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 14:03:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 32f517fa6fb15e234c827718e93c63c9 SHA-1: d42f2b98065fc30c3e5a4b8999ab5cb5c415b452 SHA-256: 9c983a577d360d722d04607e121335c5dfacdc10f4c6e93cf7a31206f78f4064
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.7717

Heuristics 4

  • 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
  • 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://maypoin.ru/award?keyword=distance+running+technique+drills PDF link annotation
    • https://cdn.sqhk.co/litalile/jid0DVx/guvalepes.pdfIn PDF document text
    • http://libralab.digital/how_to_remove_lg_washing_machine_agitatorld12e.pdfIn PDF document text
    • https://cdn.sqhk.co/virapazetif/jggiIa4/fruit_ninja_apkpure.pdfIn PDF document text
    • http://afracheat8.xyz/annamalai_deepam_video_songs_free8r20u.pdfIn PDF document text
    • http://bristol-yalta.run/zusimunozesagite8pp5v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383791/normal_600555eb1cdb5.pdfIn PDF document text
    • http://zujakupuk.22web.org/status_epilepticus_treatment_guidelines_2012.pdfIn PDF document text
    • http://pumba.fun/cant_find_procreate_in_app_storeahvy8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447630/normal_5fd062ff61c1c.pdfIn PDF document text
    • http://wogigafulokeme.22web.org/mosujinaxejedefaxelego.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwodemo/ctjeh4b/alice_in_wonderland_floor_runner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dowesitobuga/letter_format_for_purchase_order.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/63438356992.pdfIn PDF document text
    • http://jifigazanovew.epizy.com/beatles_mono_albums.pdfIn PDF document text
    • http://lununobasafino.rf.gd/fevekamijejiw.pdfIn PDF document text
    • http://xakizeko.epizy.com/what_company_is_closest_to_covid_19_vaccine.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/funodizevujugesuzigodad.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FA 5096 bytes
SHA-256: 1cd315836d82fdcc7a572a90d3e233df4e371696d916d717b871bd199da582d8
font_01_sfnt_off0001022a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022A 10144 bytes
SHA-256: 1a344d4fce294a84608f3979d0e353e9fb5d17494bda3bf25036205bc8d05f2e
font_02_sfnt_off000124f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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