Malicious PDF — malware analysis report

Static analysis result for SHA-256 126142bd07b07cb2…

MALICIOUS

PDF

41.6 KB Created: 2020-09-28 15:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 17107d6775bfa17febdd7e14cd44c3fb SHA-1: 23585c2922d28d35be26315d6ae4c8fd201ac7ef SHA-256: 126142bd07b07cb2d214aafeb4e8fcc131376a6dfa17bad4e518d2c1ecbcdb85
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/pify?keyword=free+iphone+no+surveys+or+offers In PDF document text
    • http://xedejosul.mountmmbc.com/uploads/1/3/0/8/130814673/lozilukusal_duluruzuwaj_kajosazepubuko_negiwepijerep.pdfIn PDF document text
    • http://faraku.page28music.com/uploads/1/3/2/7/132740352/7396653.pdfIn PDF document text
    • http://jimevoxiw.kisch.info/uploads/1/3/0/7/130775990/zoxomigivorezo_goladepe_besanix.pdfIn PDF document text
    • http://remavevan.en.skandiaorgeln.com/uploads/1/3/1/4/131438304/besasuso.pdfIn PDF document text
    • http://files.lorismgrizzo.com/uploads/1/3/1/6/131636930/jugenigubi-lejofalovexaki-reduvip.pdfIn PDF document text
    • http://files.swash.org/uploads/1/3/1/8/131856108/8264133.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7912/files/ayushman_bharat_card_bimari_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5352/2600/files/mezefawujidogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/que_es_el_marketing_de_guerrilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/fungsi_blanching.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2178/1160/files/rimegisugalujukunesitexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/bombay_movie_bgm_ringtones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/appsc_polytechnic_lecturers_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/straight_cable_color_code_rj45_cat6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5567/5552/files/susure.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_off00006521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6521 4864 bytes
SHA-256: f6c4ca54a45ac254b3ae78dd4a7f6303675695daf03a34df665a83fea7429ede
font_01_sfnt_off000075bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 10592 bytes
SHA-256: 2fa6d3a09e88012a5ddb85c01f6023dd0e16ac6763ab6fa707f6a14d3060c894

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