Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1a8839c9033fed…

MALICIOUS

PDF

63.2 KB Created: 2020-08-13 22:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7464fcafc120aa2d3b214d2b91d4a621 SHA-1: 4ac2e16e662fc1554f4d2670351d75f55b548a59 SHA-256: 9d1a8839c9033fedb53c91d6d261c44363c8364f8d6cec3cc2343daecd391613
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=risk+management+plan+clinical+trials+template'. The document body, though heavily obfuscated, also contains this URL, suggesting the document's primary purpose is to trick users into visiting this malicious link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the malicious redirector.

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.cc/pify?keyword=risk+management+plan+clinical+trials+template In PDF document text
    • http://files.oastexas.com/uploads/1/3/0/7/130738836/folumomifovar.pdfIn PDF document text
    • http://lutobi.taniasarthouse.com/uploads/1/3/0/7/130776394/mamugi-gipuzit-kelatek.pdfIn PDF document text
    • http://files.ourladyoftheadirondacks.com/uploads/1/3/0/7/130775471/4371637.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/1/0430/3467/3301/files/58213318079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/wosawuzutilute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/67176512744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/western_comics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/32491072766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/83473521471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/vowadixaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jegatakufiritejat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/32913253129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3402/4855/files/biomaterials_a_basic_introduction_qizhi_chen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/wutarojikadenelefesupumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2781/4805/files/fallout_4_check_companion_affinity.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 2

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_off0000ba63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA63 5324 bytes
SHA-256: a16a5a6e73ee0851360c67465ddc2edd821d515df757d103c83e01dc38f57cad
font_01_sfnt_off0000cc6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6A 10312 bytes
SHA-256: beae720e7a6ee9d13d9270f8639208d8ff7e781c486674509218ed85a9e9b5e8

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