Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9409bb66d9db8ae…

MALICIOUS

PDF

43.0 KB Created: 2020-08-17 03:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c564bc0295016918f69776385c379f8b SHA-1: 81d1a5ecec040c0a850ad03a47dd6bb343b047b0 SHA-256: f9409bb66d9db8ae4da707c0abe0f9756ae300c93062b2bd2c75f1e135ed0253
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though partially corrupted, suggests a lure related to a 'weekly weather chart worksheet'. No scripts were extracted from this sample.

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=weekly+weather+chart+worksheet In PDF document text
    • http://files.ifacsta.org/uploads/1/3/0/8/130813972/setafos.pdfIn PDF document text
    • http://files.holytrinityparishnh.org/uploads/1/3/0/7/130739315/lilofofemi.pdfIn PDF document text
    • http://files.nicoleedwardslimited.net/uploads/1/3/1/3/131381546/11dd23a06a5d.pdfIn PDF document text
    • http://files.unekmission.com/uploads/1/3/0/9/130969939/1aad1f3.pdfIn PDF document text
    • http://files.onebeautifulmess.com/uploads/1/3/1/3/131378975/tejegudisedufuro.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/1/0429/5386/7427/files/caso_clinico_de_anemia_perniciosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5521/7814/files/gujitigufef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/52322362271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/planet_fitness_workout_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/livro_de_analise_swot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/90327866314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/82230867619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/tesulafeninaverifalo.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 6

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_off00006adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADF 5156 bytes
SHA-256: cbf58407faccb144965c8527856ea98e55d8ec5aa47a0aaeec816eab2e621391
font_01_sfnt_off00007c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7D 10248 bytes
SHA-256: 8dfdd95d311a26f088efbfbdaf98ebc7b5af39ca08206c796bf0dead0e8c4a51

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