Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef9fde29bc70e9a…

MALICIOUS

PDF

40.7 KB Created: 2020-10-26 04:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 85559b1e79c7f77e657d94f54f5b76ce SHA-1: 7a06895ef8e458d80707476abc4f5e38ecb8b9e4 SHA-256: 1ef9fde29bc70e9add150d3bf482d3e87a0dde794188bb97d21a2ca918073787
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://cctraff.ru/aws?keyword=agneepath+poem+lyrics+in+hindi+pdf In PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/zorodezuw.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/kifegologoteve_tumuzibidobum_wofofe_farijenujole.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/luvijonikexurazure.pdfIn PDF document text
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/gasimewuren.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/332245.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/4c54c21.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005fd5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005fd5.bin)
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/street_racing_3d_mod_apk_hack_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0929/2472/files/bebivurakepoxoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7115/4592/files/siminemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7172/9564/files/pathfinder_channel_energy_magic_items.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/18950656309.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/25384539660.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/25329876257.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/linux_render_html_to.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/rinokizirar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2508/7643/files/songs_about_states_of_mind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/36195313051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9857/7335/files/lepagexurekawuzugovumuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6530/2936/files/1970_pontiac_bonneville_convertible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343cab88-ddcb-410b-b9d9-b469dd022a6f/41300697822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce5d4d0-2ac2-4f32-9b62-13e7787c27ed/state_of_being_verb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8091510d-8411-49f9-a758-1d89b1f04f38/88017449115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adae128d-b7f0-43cc-98b3-4a4d22bfcab6/93587998880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee227598-7129-4b83-ad6a-f641ac4a3916/99504619596.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 extracted file (font_00_sfnt_off00005fd5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD5 5660 bytes
SHA-256: 169695850430e46a16ed20134a82d84735b3ffc214ff9752cf183fba23e60202
font_01_sfnt_off000072e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E9 10152 bytes
SHA-256: c17b12caa647c1f4a0444b335477eb96774b467afb47e79c38a7aff2c1e0a54a