Malicious PDF — malware analysis report

Static analysis result for SHA-256 3425a00bc9af5f92…

MALICIOUS

PDF

43.2 KB Created: 2020-07-26 09:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c13d7bea9e0ec3b8522cab27c16a75d SHA-1: b13d310f1855f879624eb2337467f7c1d1a25e54 SHA-256: 3425a00bc9af5f92f8bbdeeff74d3f3a43873475ce25522e5d5f0239c768d023
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, appears to be a lure for '2d and 3d shapes worksheets year 2', suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of numerous links to external resources supports a pattern of redirecting users to potentially harmful sites.

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=2d+and+3d+shapes+worksheets+year+2 In PDF document text
    • http://files.hyperventila.com/uploads/1/3/0/9/130969986/3923061.pdfIn PDF document text
    • http://files.fpyc04furysoccer.com/uploads/1/3/2/3/132303269/f909798a.pdfIn PDF document text
    • http://files.myartisticdentist.com/uploads/1/3/1/4/131453214/ribane_vasilabofeb_dotowifixusiw_zejezurugo.pdfIn PDF document text
    • http://files.columbushardscapes.com/uploads/1/3/2/7/132712080/9127580.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/1/0430/6268/9946/files/87675144302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/14069161540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/90984205969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/69439410301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/viverejires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/nobugolasefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/79609423605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/75741999290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/didoletasekafakizetevena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/32291387730.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_off00006c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 5212 bytes
SHA-256: 8e799a9d8359b34a56da103c30749f14ec032be4d7573dcd104b85ad7d87cd29
font_01_sfnt_off00007e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E11 9924 bytes
SHA-256: 330ac546e6622e88024d504def2400e392e72f3b3df2d03325ed67289d7ce93e

Open this report in the interactive analyzer, or submit your own file for analysis.