Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bc767e834ebc10…

MALICIOUS

PDF

39.2 KB Created: 2020-08-30 01:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95cc4feed7d5d8e0f049dc02eb5544de SHA-1: 5ec9cb3bd1644716664d558acb40c9c2bee5bbe8 SHA-256: a8bc767e834ebc10e35e6e1d13f7e3fa69afb4e163dad1da8c2f8d0fff047a0e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body contains the URL that triggers this heuristic, suggesting a lure to a malicious site.

Heuristics 3

  • 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.
  • 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.ru/wix?keyword=1+metre+cube+en+litre+d+eau
    • https://static.usrfiles.com/ugd/b8c837_ce9bef7a5b524514a2015b534cdf4826.pdf
    • https://static.usrfiles.com/ugd/3f80ec_6e26871990a74b939a0cb65591d65fd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d54ad11e8584cbdb733ad4d6aea8d5c.pdf
    • https://cdn.shopify.com/s/files/1/0441/0579/3688/files/ronewitezozexelewuwuni.pdf
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/gta_5_the_mission_has_been_disrupted.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/fovetituzobibazamibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/browser_pc_terbaik_untuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/digulisegafuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/sodoganosarala.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/aide_memoire_tuyauterie_industrielle.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/raag_desh_movie_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/4892386287.pdf
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/figarox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba8.bin
a991f0a27c6b03dde5e11bb54fc8cb89f9013295e80bdadbba5fcd77480460ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA8 5004 bytes
font_01_sfnt_off00006c87.bin
2e84ae7a757dc4873570240cfbbcce6b6d12dccf37823fe2d9e1b8050d257e81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 10532 bytes

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