Malicious PDF — malware analysis report

Static analysis result for SHA-256 1476a2854a13c83b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 04:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 445e76273cc325eabf878b89e7f69d3c SHA-1: 72d6c5f90a034aae3183795f1cb8091874cbf86b SHA-256: 1476a2854a13c83bc648622c5c28d27162d49fb8c0a831d92df09b927c81e905
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru). The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or phishing. The presence of a malicious redirector link and the ML classifier's high confidence score strongly suggest this document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=ecological+niche+modelling+pdf In PDF document text
    • http://files.greentreeassociation.com/uploads/1/3/1/4/131453555/d7af35b5.pdfIn PDF document text
    • http://files.rulethelake.com/uploads/1/3/0/8/130815381/3764766.pdfIn PDF document text
    • http://files.marinapo.com/uploads/1/3/1/3/131378821/7aa1c9ddd44b.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/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/17947372408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/59038232849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6877/4814/files/kokizejotafupikenilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/47313309269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/arduino_sound_sensor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/rotadasipitute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/5073820189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8229/3152/files/ratexenegorupexaxavelujof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/5697385800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/gilaturadolazeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/rixowimonurini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5835/4584/files/kakiwob.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_off00006246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 5252 bytes
SHA-256: 71576dbc0d46a16ef31f1a7aeedb15e6f79c59bda8878109894f07b74460d758
font_01_sfnt_off00007405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7405 9820 bytes
SHA-256: dd47fb099d8dcb16513ffe7b4d9f9419cb7d43443e496abe997b3b7c98bf2c15

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