Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a9934508432b8ce…

MALICIOUS

PDF

56.2 KB Created: 2020-08-17 15:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b68d6f0ecf92158fdd853fc257b1d3b5 SHA-1: 7faa703ce3cdb9239ea0c082075031c28a4e6b81 SHA-256: 0a9934508432b8ce659bf9d8b5ec324c9ab5d4a1301b4fa844ccbeacf901912c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to create a link farm, with a primary redirector URL pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the same redirector URL, indicating a clear intent to lure users to a potentially malicious site under the guise of offering free website templates. The ML classifier strongly supports the malicious nature of this PDF.

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=html5+educational+website+templates+free In PDF document text
    • http://files.byrdhouseandladybugs.com/uploads/1/3/0/7/130740342/notasemiwovevo.pdfIn PDF document text
    • http://nurawa.rosesoma.com/uploads/1/3/2/3/132302815/6327413.pdfIn PDF document text
    • http://files.markdalebaptist.org/uploads/1/3/1/8/131856987/silakemixobaw.pdfIn PDF document text
    • http://sijin.mpelite.org/uploads/1/3/2/6/132681237/6879988.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/1/0430/4447/0933/files/25036034296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/cannabinoid_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/how_to_read_psychrometric_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/wukes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/70786893575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/register_sublime_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/zakixagejasokamizejuves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/87202701417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4202/6150/files/pssc_physics_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/nyc_parent_affidavit_of_residency_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/56016456947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4624/files/english_brushup_5th_edition_free.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_off00009d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D10 5620 bytes
SHA-256: 9ad7a578de98f4a204a4e5ff1a2e2221d11bb9568174ff8f6ce5bd7d82e1ef8c
font_01_sfnt_off0000b01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB01A 10308 bytes
SHA-256: da5c4cd46007b9f93227e648009d2bde686f1b8c8f1aa3212f09e0a3fca12efc

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