Malicious PDF — malware analysis report

Static analysis result for SHA-256 9930b707f90870b6…

MALICIOUS

PDF

33.8 KB Created: 2020-08-17 05:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bbca57e0627146cd6f6311b50fc41b5 SHA-1: 13a126c6388ea0a915373680b7059bf93bfa4754 SHA-256: 9930b707f90870b62a266f2581df351c941834d4c7886af5996ae5948b1135c6
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.ru/pify?keyword=factoring+quadratics+algebra+1+worksheet'. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on Shopify, likely as a lure. The presence of numerous external links and a malicious redirector strongly indicates a phishing or redirection attack.

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=factoring+quadratics+algebra+1+worksheet In PDF document text
    • http://files.msjohnsonscienceclass.com/uploads/1/3/1/8/131871484/kezezubuxeb_nelodutudonesav_jediwotamumigu_nodoge.pdfIn PDF document text
    • http://files.misadaitg.com/uploads/1/3/2/6/132695569/wogemiganozurubu.pdfIn PDF document text
    • http://tibigizo.whittykitty.com/uploads/1/3/0/7/130775540/bodovatobebim.pdfIn PDF document text
    • http://files.madebymitchell.com/uploads/1/3/1/4/131437091/5143135.pdfIn PDF document text
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.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/1/0440/4301/0198/files/declaracion_de_alma_ata_1978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/exercicios_associao_de_resistores_mista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/jifijadadogurir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9065/6921/files/95714155066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/47606831008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/64871428506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/kifeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/gurakasututugavomemole.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 8

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_off00004782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4782 5628 bytes
SHA-256: fd8ae16d18da41cf3645c79061e77e6a0fa107e4470f2e9dfffbd27786ba558d
font_01_sfnt_off00005aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA7 9324 bytes
SHA-256: fec2b859fca1eb7bda6a404f25b169ce923c465fb7c1801414acf518c1bbafb5

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