Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f8198ba5e5a50f…

MALICIOUS

PDF

84.8 KB Created: 2020-08-03 10:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 552f1fe49a321c8ce05f3446cb25d49c SHA-1: 453f60e3ce9d81d935b1448dfe623acf47912b87 SHA-256: b1f8198ba5e5a50f1555922651af18f01b3e55fdb079d79bf416d5e53849c978
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of the primary links, https://ttraff.cc/pify?keyword=array+sort+java, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'array sort java' and the URL, suggesting a lure to a potentially malicious site disguised as content.

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=array+sort+java In PDF document text
    • http://kavijik.emimendoza.com/uploads/1/3/1/4/131409090/4763634.pdfIn PDF document text
    • http://files.lilibit.com/uploads/1/3/0/7/130775084/9485470.pdfIn PDF document text
    • http://files.cheshirecraftsmen.org/uploads/1/3/1/4/131406527/wizejufaxusebagazasa.pdfIn PDF document text
    • http://files.maritimeheritagepress.com/uploads/1/3/1/4/131454221/0b10d.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/1/0433/0255/1716/files/61343715721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/duregeluzobifatuginoledix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/jilam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/foset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/1235973502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/43321945681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/xularobob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/gezinarowatafixozugedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/dibugenuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/fifarobup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6000/2967/files/linux_application_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/wapijovuminavadowebubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/41433307037.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 5

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_off000109cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CD 4876 bytes
SHA-256: b5547cb80ac5bfb12a4258ab046b5cdba4fce58f7aa0d65cd92b79fa0031ded8
font_01_sfnt_off00011a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A81 13552 bytes
SHA-256: 9bbf2a058390da4ef07cdada01b1a410b75feeba92abc7bb09964fb812330f5a

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