Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee060ddf3f0b100…

MALICIOUS

PDF

72.3 KB Created: 2021-03-16 05:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ce71c0693141c71b02e2ebacab18da SHA-1: ca75f5f257fc397fec6430cf243fa8e5475d4731 SHA-256: 5ee060ddf3f0b100d5adb54b45480e42da0abbf769425726bdfe75be1a8a9fd7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document contains numerous external links, forming a link farm, with one prominent URL being dugedepap.ru. While no scripts were explicitly extracted, the PDF structure and the presence of many external links suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/wix?keyword=crotch+high+boots+for+sale
    • https://cdn.sqhk.co/denepepunuja/obDbxgj/likee_code_sms.pdf
    • https://zexajupa.weebly.com/uploads/1/3/4/6/134692079/dopumiga.pdf
    • https://cdn.sqhk.co/sinemajud/v1Qhigd/zombie_street_fighter.pdf
    • https://cdn.sqhk.co/mujetujojen/obZggch/startpage_firefox_focus.pdf
    • https://cdn-cms.f-static.net/uploads/4403563/normal_6037f055ad98a.pdf
    • https://cdn.sqhk.co/tajaketo/dihhdgi/80413577145.pdf
    • https://tewukowil.weebly.com/uploads/1/3/2/7/132741555/5696780.pdf
    • https://bewevirat.weebly.com/uploads/1/3/1/4/131437926/pugexitigajor_mirojegive_bujovasovewi_buvukawe.pdf
    • https://cdn-cms.f-static.net/uploads/4380682/normal_60184d065f235.pdf
    • https://jukovuwivoxufab.weebly.com/uploads/1/3/3/9/133997180/6df95.pdf
    • https://cdn.sqhk.co/wuxaguzifep/c4x9gfj/88927418000.pdf
    • https://marizezibafive.weebly.com/uploads/1/3/4/8/134865590/mivunatetogolenapoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sukepavudopuje.epizy.com/wired_for_love_miles_mcpherson.pdf
    • https://0dc5fd1c-b354-4e5b-9ccd-45395e8994ed.filesusr.com/ugd/f79e8d_4d8591c2198e4449800636aa971a8843.pdf?index=true
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_d10f5143dae9401d9fc838e8f840866a.pdf?index=true
    • http://dorurefu.epizy.com/jawbone_bluetooth_era_manual.pdf
    • https://uploads.strikinglycdn.com/files/f0ceabbb-9f3f-4cc0-b201-e5e62e8055fc/how_to_start_the_pilot_light_on_a_water_heater.pdf
    • http://zozozixub.rf.gd/diganozikoruvurexorenop.pdf
    • https://uploads.strikinglycdn.com/files/dade7066-7d61-4602-969c-aaa290f75269/best_brand_of_fridge_to_buy_in_malaysia.pdf
    • https://721ea522-a1f6-4523-903e-24b3c8014629.filesusr.com/ugd/5a834c_aedb7248f8304a41b99282b9db9c2496.pdf?index=true
    • http://baroputufusu.rf.gd/bilotodej.pdf
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_a3092a42b0644f2b94c4baa38811d9b8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8997078f-c47a-4272-a3cd-0e029ddaba99/percy_jackson_the_lightning_thief_read_aloud_chapter_6.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e150.bin
7838bdccdd994e725fccf3dbe0cb534a85cb1d76d3618e5aecabb09eedcf75ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE150 5188 bytes
font_01_sfnt_off0000f2f3.bin
6339acff32a113514627fd556dfa8459e9a71177508201a24cf32d320a564152		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 9564 bytes

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