Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fa072b5c17ae68…

MALICIOUS

PDF

46.8 KB Created: 2020-08-10 10:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91c67e0f45b97e707682b0c8645e1308 SHA-1: 6b3aca339c0ee098b04a5ef624e573874105aa7b SHA-256: 65fa072b5c17ae684cd7883cc2527c26de143826b595a0b8ebde856e81f6a5b3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure related to a 'futurelearn certificate of achievement' and embeds numerous links. Several of these links point to redirector infrastructure, with the primary malicious redirector identified as 'ttraff.ru'. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or phish users.

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.ru/pify?keyword=futurelearn+certificate+of+achievement+pdf In PDF document text
    • http://fuxuja.greensboromedicalsociety.com/uploads/1/3/1/4/131407552/f4cee.pdfIn PDF document text
    • http://files.luisimera.com/uploads/1/3/0/9/130969438/diparofa.pdfIn PDF document text
    • http://bifujet.anetagrygarova.com/uploads/1/3/0/7/130776445/semet.pdfIn PDF document text
    • http://files.firebirdnewzeal.org/uploads/1/3/1/6/131606248/854963.pdfIn PDF document text
    • http://kenufavad.plumasarts.com/uploads/1/3/2/8/132814930/cbfb69.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/1/0433/6123/9192/files/wokevol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/emoji_show_me_the_money.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/sariwedewutokow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3483/files/vebonuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/mushroom_biryani_recipe_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/wesabekutekimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/vanozezuzimipelagesas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/98656028707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/vegosutep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/mizixaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/netepokixetoxafakojok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/86124222589.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

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_off000078dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 5232 bytes
SHA-256: d9711dd2f64e4ee7a27842a8691b17f196116a86703136bf6f2bf0f36095056b
font_01_sfnt_off00008a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A87 10340 bytes
SHA-256: 770710d2210b52470c284d2fa03cd9a4f37898a66f81a47a884179a03e19bcad

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