Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea4e1a4c9a176f0…

MALICIOUS

PDF

162.3 KB Created: 2021-06-13 01:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7e71bc6dcc232d4c0014b391de243e5d SHA-1: 0b770acde6dc33704dd0bddde74be9980ca20688 SHA-256: 7ea4e1a4c9a176f08c03d039563021f099a38383bca89231ed70816fc5c9abad
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9756

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://ketchas.ru/pbw?utm_term=jurassic+world+fallen+kingdom+free+movie PDF link annotation
    • https://sumolepixa.weebly.com/uploads/1/3/4/6/134635742/417535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491164/normal_600d60691a390.pdfIn PDF document text
    • https://pudemozesuvetit.weebly.com/uploads/1/3/7/5/137515762/9074645.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5ff894622307c.pdfIn PDF document text
    • https://risenezapaf.weebly.com/uploads/1/3/4/4/134481661/4765394.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416802/normal_5ffb7b9b9da77.pdfIn PDF document text
    • https://fedubipogumuwu.weebly.com/uploads/1/3/1/3/131379546/tusojuximomiga.pdfIn PDF document text
    • https://nusomosuguxapo.weebly.com/uploads/1/3/4/6/134693055/gazedapotemuzox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470683/normal_6003ba007eeec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pilujibos.pbworks.com/w/file/fetch/144578523/42526592966.pdfIn PDF document text
    • http://xizegopago.pbworks.com/f/kanmani_anbodu_kadhalan_remix_song_download.pdfIn PDF document text
    • http://sagabum.pbworks.com/f/wekagidoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1564b5a9-8c9b-4a1a-a368-ebdaf6120ff3/troy_bilt_tb200_oil_capacity.pdfIn PDF document text
    • http://dumunivuniv.pbworks.com/f/pedelafipeziwozepefoxemif.pdfIn PDF document text
    • http://tologivego.pbworks.com/f/fumafeniwimazefifulagu.pdfIn PDF document text
    • http://gitixofipoxu.pbworks.com/f/download_free_clash_of_clans_mod_apk_offline_for_android_-_coc_hack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c72fab52-8029-4880-a056-9780d4dbda58/75588226700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab3d902-302d-47af-aeef-50b3c29a0a2d/examen_olimpiada_de_matematicas_bachillerato.pdfIn PDF document text
    • http://ralogotuxa.pbworks.com/f/vocabulary_workshop_level_c_unit_5_antonyms_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c0e6b14-b1eb-4d1b-9977-8ee8b0ec2f73/wujugiximotolemudeja.pdfIn PDF document text
    • http://filijego.pbworks.com/f/17903055315.pdfIn PDF document text
    • http://vogivakazela.pbworks.com/f/derojusowifimorusixiko.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000253e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x253E9 5548 bytes
SHA-256: 6fafdc204c41ae902c9803ca4e93f24f3b8ac86717da536bc15c8c36fbb50582

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