Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbd4f48a748edf5…

MALICIOUS

PDF

74.0 KB Created: 2021-04-14 08:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 63e84fa782e2769c7229843e401c1a6d SHA-1: b0f791148b451d23b195172bf55754dc4acd84f9 SHA-256: cfbd4f48a748edf5b595874f164a0d5fa195160365f41a26e3acb0f91c3a03e2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://botokaw.ru/strik?utm_term=howard+miller+clocks+prices PDF link annotation
    • https://cdn.sqhk.co/fitamorigob/chegcdh/likexo.pdfIn PDF document text
    • https://savejesala.weebly.com/uploads/1/3/4/6/134668282/32edb.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/Zzjc7xH/wamade.pdfIn PDF document text
    • http://xujofalidubof.iblogger.org/particularly_synonym_formal.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/jjiigcT/car_parking_multiplayer_mod_apk_unlimited_money_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/kugeturo/ii7hhUr/11350288353.pdfIn PDF document text
    • https://cdn.sqhk.co/powitaxixu/iafhXhc/rewaxomajibo.pdfIn PDF document text
    • https://xalojuxovev.weebly.com/uploads/1/3/0/7/130774978/bevuxasorotijajepado.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hcEtggb/11770593137.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/gcibhdl/duxufabedetobexubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gejofizax.rf.gd/52169289715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e887acea-9714-46de-9287-43adaacf1eef/kekitefaxil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0454fa0-a64a-400a-a3ce-acd995fb801c/how_to_fix_a_vizio_tv_with_no_power.pdfIn PDF document text
    • http://mikesivu.rf.gd/gutitufasoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06e9e2f-30c4-4e00-985b-f74f2ac5d14b/when_does_the_new_hunger_games_movie_come_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66368207-2891-4681-b6ed-85352fa4d8cb/what_was_the_pinckney_treaty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72eb3c1-35dc-4110-b5d8-21d34e55b479/speed_queen_commercial_dryer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4233f6ac-d96c-4ef8-82a9-a800063581ed/authentic_happiness_book.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 5336 bytes
SHA-256: 1515d84848e181b3bf83bce46ec5e54b017c3c4f0da7fc453c8e414af7af07e7
font_01_sfnt_off0000f1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 11644 bytes
SHA-256: 1676f9e50bedc487a3dd84bf183db43e3858bce322841fcd9fc5932730218892

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