Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e57c8f53b22580f…

MALICIOUS

PDF

123.0 KB Created: 2020-08-11 06:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e76f9af4921a4e9f23ab29f56952d6b SHA-1: 520c7eccc06dca7ef495533f22e9a205e0a1916d SHA-256: 5e57c8f53b22580f5d21662f5de3ab16ab2aee99d83fdfd19e0353b5b71b4153
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to a known malicious redirector (ttraff.ru). The document body, though heavily obfuscated, contains a URL that matches the redirector. This indicates a phishing or scam attempt using a link farm to distribute 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=scope+of+ornamental+horticulture+pdf In PDF document text
    • http://files.louisvillehealth.org/uploads/1/3/0/8/130813694/sowikikokiwag-nemija-peboku.pdfIn PDF document text
    • http://rowepebab.taylorlandscapeandgardens.com/uploads/1/3/0/7/130776483/4761204.pdfIn PDF document text
    • http://kivev.geierbrainlab.com/uploads/1/3/0/9/130969723/vixoxikerape_xetuxe_falafigobujeton.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/1/0438/7025/7320/files/atharva_veda_samhita_sanskrit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/295153622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/the_everyday_writer_5th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/xulotefopopezir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/loselijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3403/3824/files/duzesagax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/similarities_between_classical_and_neoclassical_theories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/this_copy_of_windows_is_not_genuine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8841/8718/files/autoimmunity_notes.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_off0001a7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7D1 5320 bytes
SHA-256: d0b2c7639a6e01e60ec09e223e993e5dcbe0aea7038e6246f6776c849c86ff4a
font_01_sfnt_off0001b9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9AB 10776 bytes
SHA-256: a8dccdc4e1ad717aa235813011426a4b00499294df978e65ca90986f5d33382d

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