Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4ac90a6e7261cd…

MALICIOUS

PDF

68.2 KB Created: 2020-08-04 09:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d14a4737e996663e7337d0e32b86394f SHA-1: 2b0ff42aefb5c97b90164f6c645ab294f55cc846 SHA-256: 0f4ac90a6e7261cdce1f615afd73fb4e90f6bdbf8916ba9f22c21d088169fd71
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to lead users to malicious sites. The primary redirector URL is https://ttraff.ru/pify?keyword=amtrak+empire+builder+schedule+pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains this same URL, suggesting it is the intended destination for the lure.

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=amtrak+empire+builder+schedule+pdf In PDF document text
    • http://files.wauwatosaeastbandboosters.com/uploads/1/3/1/3/131383424/boxis.pdfIn PDF document text
    • http://files.duboisfmc.org/uploads/1/3/0/7/130740357/2541872.pdfIn PDF document text
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdfIn PDF document text
    • http://files.professorsilverblank.com/uploads/1/3/0/8/130814078/bc31c52f8b.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/1/0440/1171/6766/files/24350791763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/ximekasafim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/sewudig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/nenukurogiwanekeposusugad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/zigojavetiluwajuraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/sezuwefujidevuwuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/sewuxitovasigokudibudag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/67734007353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/lolakokagapapunazafegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23313492251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/86302694181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/29036234490.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_off0000baba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBABA 5588 bytes
SHA-256: 1c8435efdc3c55aaa9ff023abfccb73201572d92f2347bcc8ef5f2cfc1419b35
font_01_sfnt_off0000cd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8B 16612 bytes
SHA-256: 2bd418090112ce244edb2f361372020687ae1a35a1e940c2af74964ec3f76a4d

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