Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9d10be620e283f…

MALICIOUS

PDF

48.0 KB Created: 2020-08-09 00:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bd8635a3cd233957f55c83cdf09832d SHA-1: ad9d18388d7ee72c4a772fe3d6aa63b513f49c58 SHA-256: fd9d10be620e283f89f35dee1adf4c522a2d8f92b7349561cc46284e78d9a121
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The embedded URL `https://ttraff.ru/pify?keyword=accounting+journal+entries+examples+pdf` is likely part of a link farm designed to attract clicks. The document body, though heavily obfuscated, contains fragments of the lure text and the malicious URL, reinforcing the social engineering aspect.

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=accounting+journal+entries+examples+pdf In PDF document text
    • http://files.firstandmainre.com/uploads/1/3/1/8/131871864/pewop.pdfIn PDF document text
    • http://files.stbernardsnakerun.org/uploads/1/3/1/4/131437515/5dc84.pdfIn PDF document text
    • http://files.lakefieldbaptistchurch.org/uploads/1/3/0/8/130813985/buxuzojiwa.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/1/0434/2870/8519/files/kuzepikir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/1800345045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/wirotesoxijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/vedek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/24619738882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/wizir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/php_copy_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/vuxibafikolopovazexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5679/0678/files/nudogidaladimofezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2309/0343/files/sleeper_cell_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8460/files/84385142217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/tanavetifavixuwavor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/free_online_to_word_converter_editable_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/centropomus_undecimalis.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 4

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_off00007ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD5 5608 bytes
SHA-256: 8074d6c4356bf4d64c79a1509bfd999afcd1bcdb40e51d6d317ea94d69b4f448
font_01_sfnt_off00008ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDF 10788 bytes
SHA-256: 67473ed8350689204caa2ead5c4a7db183b0a2263e6a7f75f200102badbd73a9

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