Malicious PDF — malware analysis report

Static analysis result for SHA-256 6447c481c35b3af9…

MALICIOUS

PDF

73.8 KB Created: 2021-04-01 19:04:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 00349c98e40badd347a5e029550cc81f SHA-1: 531c5e9e2cbd7a85b62ed1ba5c1fa681376336ad SHA-256: 6447c481c35b3af915c2e363145f90694fbd9d5353fe7a6d0458e61ba2a74153
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://jottigo.ru/award?keyword=a.+o.+a.+c+official+methods+of+analysis+pdf PDF link annotation
    • https://cdn.sqhk.co/kezixowog/iahejgh/hop_step_jump_anime.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/jdylghj/rateg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479214/normal_5ff8c7697cbc1.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/gchK9TQ/defasofajogidivoke.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/jApfNgf/cloud_innovation_studio_gallery_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ziwetuvije/cgjeieZ/small_business_loans_texas_coronavirus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_600c7929b1bf4.pdfIn PDF document text
    • https://cdn.sqhk.co/vapitinab/lifghFI/war_robots_download_pc_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/giifljj/pokeball_plus_charging.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_5fe68632be9ca.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/hcUeijq/naburipufidixivuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/MhdigyM/36800904147.pdfIn PDF document text
    • https://cdn.sqhk.co/tuforalogidu/MTY1jj6/gambling_game_rooms_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/fQyGje1/7984061748.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/iaPgcgh/castle_park_farm_ky.pdfIn PDF document text
    • https://cdn.sqhk.co/jozojonujaj/cOHhjLN/wigotitafagebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/11b2512c-e638-437d-9ab7-3acc3bc29cc0/tijewawiziriw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a3d141-31eb-449d-9cf3-c93e2c25cff0/vagivebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea575c36-f61f-4567-989c-33736ce2f4d6/21142977369.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3F 5420 bytes
SHA-256: 404e6a2e18d3c99282cfc072539fa03c89005080a72796aff14c4d5e7cad17fe
font_01_sfnt_off0000dda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA2 11360 bytes
SHA-256: 630f7f38cd9d76d9a20c8cb2c6b09f0810da8625de767213ccb0c22be797f48d
font_02_sfnt_off00010410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10410 16232 bytes
SHA-256: 0865ea5686e30d19842a941efae749c2e92da649021023aa876fc32c67f43dd0

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