Malicious PDF — malware analysis report

Static analysis result for SHA-256 6191a531821e2ac1…

MALICIOUS

PDF

57.6 KB Created: 2020-11-01 08:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 0d24e24bec060a28574388c531e9e0f8 SHA-1: 59e2c69fda04f6a8b1eecf848e19310a7b01098a SHA-256: 6191a531821e2ac12865db0432e903a801a59b43ff73420a4d3d6614e8e5c35d
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://ggtraff.ru/123?keyword=sonic+adventure+2+hero+chao+guide In PDF document text
    • https://bufetokarad.weebly.com/uploads/1/3/4/0/134096279/xojoz_nesalexu.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/lopinudifegopotukas.pdfIn PDF document text
    • https://mijekuwovosi.weebly.com/uploads/1/3/4/3/134321571/sulov_gunijof_nifikazepe_jivofogovojuf.pdfIn PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/zugusuf-bapuzut-zuwuwod-najigigoxu.pdfIn PDF document text
    • https://dekekutema.weebly.com/uploads/1/3/4/4/134440935/9105977.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/5de8960330ffce.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/suzepapiwupe.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/dabiwag.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a2c7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a2c7.bin)
    • https://cdn.shopify.com/s/files/1/0502/8842/7181/files/6829054945.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/family_feud_game_apk_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8cebfe0-cf20-42e4-8a96-2bcb3ff577f1/noticias_del_imperio_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0574/5565/files/56248146618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/tp_link_vr300_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5443/7817/files/craftsman_air_compressor.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_off0000a2c7.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C7 5288 bytes
SHA-256: 1b276248d416cbf2d157b4c63f530b39f413ed58023fa1ce53022b9a071d59dd
font_01_sfnt_off0000b4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4CA 10696 bytes
SHA-256: 4b07da48f05a1d2d43fa2f87522c0de5077d6221c57aa3d9c300c796b8352fab

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