Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1532f14074df7e8…

MALICIOUS

PDF

75.0 KB Created: 2021-02-28 10:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b75263ff549ade934860144aa4bfe2be SHA-1: 9962999ef8ac45b379b9cfa9c0f1922beb66a0af SHA-256: a1532f14074df7e805c9a3562b09120cbdf7eb939eac4721f5bab30f12817704
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/award?keyword=mophie+powerstation+xxl+user+manual PDF link annotation
    • https://cdn.sqhk.co/xekemini/9x5HQRi/bedwars_minecraft_map_download.pdfIn PDF document text
    • https://mabodezi.weebly.com/uploads/1/3/4/5/134590290/4718323.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/4558399.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408323/normal_600044cecd7ed.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/tiwufabewewi_woxinupal_kugapefof.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/gfggKmt/hnefatafl_game_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/P3hciVR/adding_upfitter_switches_to_ram_2500.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502817/normal_5fccb204cb39b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445868/normal_60373dd4b605f.pdfIn PDF document text
    • https://cdn.sqhk.co/ritafase/B5hiahc/average_lyft_driver_salary_san_francisco.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/jdhh0bZ/unblocked_games_66_bullet_force_blaze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485704/normal_5fec17f94aed0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369788/normal_5ffa2d3f39627.pdfIn PDF document text
    • https://cdn.sqhk.co/bufutoje/hjoTVgf/98646625620.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/selivuvumepaveb/clculo_integral_ejercicios_resueltos_paso_a_paso.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/juwevifipujozepufemafem.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/sheetrock_garage_code.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/gogeratalafuv.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_off0000e930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE930 5224 bytes
SHA-256: e8e0a4f2a490b5753f9b5492c067ecdd58a6e01f398d0ff1d3ff44765122e572
font_01_sfnt_off0000fae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE9 10744 bytes
SHA-256: b5f15419ce6d07a28c37496c91a584044a995b1a394e088dbda1262364a79a67

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