Malicious PDF — malware analysis report

Static analysis result for SHA-256 a410ad83ab15fd47…

MALICIOUS

PDF

53.3 KB Created: 2020-08-27 23:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9aa13758196d77627ade34c735a9701 SHA-1: 4a5031a06b9db9d02dd43a9b2528d89175d8ae3b SHA-256: a410ad83ab15fd471e28afad7bfa81acc41c005e18e3b8282e9795eff276fda0
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to its inclusion of a redirector link pointing to known malicious infrastructure. It also contains a large number of external PDF links, characteristic of a link farm. The primary malicious IOC is the ttraff.link redirector, which likely serves as a gateway to a phishing or malware distribution site.

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.link/pify?keyword=descargar+cura+3d+espa%25C3%25B1ol In PDF document text
    • http://files.photosfrommyheart.net/uploads/1/3/1/4/131453871/f5dbd250fcc6f.pdfIn PDF document text
    • http://redagajo.clarencedwhite.com/uploads/1/3/0/7/130739561/963aeb.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/1/0437/6464/6037/files/12880234805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9265/6799/files/90514585637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/musica_cristiana_de_stanislao_marino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/fudekonopedavijodasuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/abnormal_psychology_test_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/zusogubopupegobim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/94225997274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9409/7576/files/determination_of_an_activity_series_lab_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/34115211308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/82830981008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0002/7545/files/91219419329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/14430228584.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 1

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_off00008ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC1 5616 bytes
SHA-256: d297475d85084a11608ecc9e237e143168f704a8fcc3840cec3a64978f3fccb9
font_01_sfnt_off0000a1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A3 11384 bytes
SHA-256: 09e0b58922ef859c0ac8bfa5618052bd3bfdadc9a608f6a108317f21d0cce8dd

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