Malicious PDF — malware analysis report

Static analysis result for SHA-256 752b965437e489af…

MALICIOUS

PDF

86.4 KB Created: 2021-05-23 15:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8cd86a18afaf7f6255a949a8e0b1950c SHA-1: ddd0decc955c25d7279d25adeb58bd86c8e34543 SHA-256: 752b965437e489af9f9b578a46ea11d191ae0577c4a15bc13ba3c1cb2b631360
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 0.9998

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://pelibifir.ru/strik?utm_term=what+superhuman+powers+do+i+have PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367905/normal_6068f0bbebab8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413109/normal_5ff4c7c5a6146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384822/normal_6069435c1f1a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450631/normal_5fdb06f861160.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/63002772817.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/tagutepilitogevudajoduki.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/what_are_the_examples_of_parts_of_speech.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/36079326457.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/kepemukuvusevotato.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/iti_aliganj_lucknow_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/defasifitufonowediborisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b050d1-c44a-47b0-978c-c765cf20844f/mass_communication_living_in_a_media_world_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/sijuvusidezado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edce663b-11f2-407f-bb80-8b324cd2d729/on_average_how_many_cycles_to_get_pregnant.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/sofuz.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/liloxorub.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/casio_g-shock_rangeman_gpr_b1000_multifunction_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec3a5ea4-d4ca-48de-b82a-7714e71f990f/what_is_a_team_leader_-_description_role__responsibilities.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/zujogovufiratuwejimurebi.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_off000115e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E5 5332 bytes
SHA-256: 38cdaa5a565611846eea44a4e40a7cdd8f01783fe1690292ddca2341b0255cf0
font_01_sfnt_off000127f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127F3 10912 bytes
SHA-256: bbadef0d3e50ddeb0f4ad399bf2d80ad2a89cbd67437574439523958ca361129

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