Malicious PDF — malware analysis report

Static analysis result for SHA-256 d865dc20a16b10e9…

MALICIOUS

PDF

35.0 KB Created: 2020-08-17 05:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 958da798ff28429435ad0eca4b89363c SHA-1: 208fb7cb9e1c932ac4e1769c343811a4bba84996 SHA-256: d865dc20a16b10e9894f4671252a27611978d468374cc5eaad15993c2cea20bd
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Medicare card application form australia' and the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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=medicare+card+application+form+australia In PDF document text
    • http://files.wheredreamscometruefor.com/uploads/1/3/2/8/132814898/reviwonoj_vifipin_mikananezivavap.pdfIn PDF document text
    • http://files.joyfulbeginningsschool.org/uploads/1/3/0/7/130775987/lekukujeba_xijuxexupudu.pdfIn PDF document text
    • http://files.cheekycherubscommunitylearningcentre.org/uploads/1/3/1/4/131483266/vepulav.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/1/0431/9982/4032/files/jewuzole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/ftc_buyers_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/wofedamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/temiwub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4954/7936/files/75002034668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8833/0396/files/xosatawepete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/computer_capsule_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/magixisovajobatajed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7175/0822/files/lekusenukufom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/workforce_planning_hyperion_admin_guide.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 5

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_off00004a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A89 5304 bytes
SHA-256: bcc72a91ee17cc317a90c41c27a0ee24a6645a4aa189e1a4cd65a52e9374e76c
font_01_sfnt_off00005c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C79 10172 bytes
SHA-256: 68e973c1df9d2080ed4d2aecd4cdb86416ea3d74147f36f80f4453f3dcb7d3f1

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