Malicious PDF — malware analysis report

Static analysis result for SHA-256 5927e1371e930471…

MALICIOUS

PDF

79.0 KB Created: 2021-04-04 10:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f37878d94d72347653bfeb31f5da2db1 SHA-1: 919d3877241df47912fa2c0ef91c3f627448e72b SHA-256: 5927e1371e930471e41c2fa13f8e15e15462ba581e2fb69e0fd5481e1398b9e9
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 0.5010

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://jottigo.ru/strik?utm_term=is+a+forklift+course+hard PDF link annotation
    • https://cdn.sqhk.co/jiwonukunav/i0u6GGF/sasifikikavib.pdfIn PDF document text
    • https://cdn.sqhk.co/mawedabe/VxOQTGz/wicked_wolves_ruka.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/NCgjDjf/4703872945.pdfIn PDF document text
    • http://varistop.site/betternet_apk_para_iphonedsvhi.pdfIn PDF document text
    • http://connexion-amelii.xyz/the_magic_flute_synopsis_metropolitan_opera4ssmg.pdfIn PDF document text
    • http://tetoxukipim.getenjoyment.net/where_do_i_find_the_network_security_key_on_a_netgear_router.pdfIn PDF document text
    • http://xutefizil.getenjoyment.net/boccaccio_dekameron.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_604da52b7583e.pdfIn PDF document text
    • http://community-day.ru/34935394415xsx2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386822/normal_605c8688ed462.pdfIn PDF document text
    • http://walolexokesufa.sportsontheweb.net/deep_learning_techniques.pdfIn PDF document text
    • http://tadurarawi.mypressonline.com/kedoxujav.pdfIn PDF document text
    • http://biomaniks.website/karate_kid_2_movie_in_tamill1uwb.pdfIn PDF document text
    • https://cdn.sqhk.co/rinilafexowi/jejh1jb/2287187068.pdfIn PDF document text
    • http://dreabling.online/meeting_room_booking_software_canadadihh3.pdfIn PDF document text
    • http://discount50.pro/vaperegujarobirepur59tr9.pdfIn PDF document text
    • http://legendbilisim.com/hitchhiker_s_guide_to_the_galaxy_robotrj08y.pdfIn PDF document text
    • http://mizejodaf.mywebcommunity.org/short_bored_pile_foundation.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://uploads.strikinglycdn.com/files/ee41ff05-751f-492a-a061-a924f61f0f32/manual_de_calidad_de_una_empresa_constructora_peruana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560c0719-c8fb-4d14-bd87-843e1703ed61/4157669497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc82b9f1-93b7-4347-846f-c902c38afcf5/98867496684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e36c5a74-d008-4384-b40a-83934e97b293/sipuboxapokaboripuvo.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_off0000fadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADD 4884 bytes
SHA-256: 283b5c832a53c07128cab964e957adf50727f5ca3ba075d3f2b3c4e56a99c030
font_01_sfnt_off00010b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B82 11124 bytes
SHA-256: 8a71f83e96215ded9a38c8dd3121d0c7c635ce05c5e1e83c7ee0211832f29a85
font_02_sfnt_off00013136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13136 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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