Malicious PDF — malware analysis report

Static analysis result for SHA-256 29da7d2840a1666c…

MALICIOUS

PDF

46.0 KB Created: 2020-11-08 02:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 524914fea42018803f102dc9547181c6 SHA-1: e3b6287479e493648b3ecc07d679cb40001e0de6 SHA-256: 29da7d2840a1666c68a4cbba357796e51ce78096ff5be2d86fdc4006b0f2b72a
76 Risk Score

Malware Insights

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

The PDF contains a lure referencing 'Albert.io answers ap gov' and a high-confidence ML classifier flagged it as malicious. It includes an embedded URI and a redirector link pointing to 'https://traffset.ru/123?keyword=albert.io+answers+ap+gov', suggesting a phishing or scam attempt. The PDF structure also indicates it's designed to exploit user interaction via links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/123?keyword=albert.io+answers+ap+gov PDF link annotation
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/likafenuditadi.pdfIn PDF document text
    • https://kafedujewerom.weebly.com/uploads/1/3/4/6/134622586/zizurigiga-gitove-medujubiwibisa.pdfIn PDF document text
    • https://togurekeve.weebly.com/uploads/1/3/4/0/134040335/7231885.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/bisutadigaju_buvip_ridefiwisesoti_febije.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://s3.amazonaws.com/tokafanawa/59752376577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a25dd27-25a1-4bec-8465-8b3c9a8c0520/waxajapejene.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/dragon_ball_super_broly_dubbed_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cce265c-d5ab-42a1-8969-ed74199f0398/vehicle_registration_renewal_el_paso_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/bx21_bus_time.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/abecedario_aleman_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/solve_2x2_rubik_s_cube_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f3d9c54-1dee-4fc4-9edc-27b6ee05dfcd/xikexodunodowedulokeruz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143fb8ba-e36f-400a-92d1-fd426bf49106/44186999957.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/77130338279.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6445 5088 bytes
SHA-256: cdd43f2696700a7023ccc15a125e8ac1e8b0c43290a4563b36e87e7c711e8a3b
font_01_sfnt_off000075ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AD 11692 bytes
SHA-256: e97ea33b3d766f41e020425a6e121eef861e2a62f730f396d7d590d4d3e6b8a5
font_02_sfnt_off00009d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D42 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361