Malicious PDF — malware analysis report

Static analysis result for SHA-256 1546a4cd308f10e3…

MALICIOUS

PDF

38.2 KB Created: 2020-08-19 05:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5db184e91a32bb84a235021edb76dedf SHA-1: 2801cd99d2e5e75eec522e4dcf8de9115273bdd5 SHA-256: 1546a4cd308f10e30c345cec2cc83cf26f57d1ed91fb721250eb5b29a9b786bc
194 Risk Score

Malware Insights

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

The PDF document contains a deceptive lure, "Certificate of appreciation samples free", and embeds numerous links. One of these links, https://ttraff.ru/pify?keyword=certificate+of+appreciation+samples+free, is identified as a malicious redirector. The document's structure and embedded links suggest it 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=certificate+of+appreciation+samples+free In PDF document text
    • http://modoto.centerstageplattsburgh.com/uploads/1/3/1/6/131637789/raninigepowokape.pdfIn PDF document text
    • http://files.brickhouseroofing.com/uploads/1/3/1/4/131437924/bc3a5.pdfIn PDF document text
    • http://files.807boutique.com/uploads/1/3/0/8/130813860/ridat.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/1/0432/4442/1282/files/tepanuxuwipubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6125/5073/files/36010953623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/22243279297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/amorphous_silicon_solar_cell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8123/files/womikegavarigapodokebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/18310141806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/dijujazogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1908/files/javegorur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/7612783873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/gagidopifukamawujulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2573/3531/files/2239176239.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 4

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_off00005a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3B 5064 bytes
SHA-256: 38d9246895d577a770a5e258e2234543c50963936d648d35b07f0bb494339b8e
font_01_sfnt_off00006b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 9580 bytes
SHA-256: 8d0157baf54dcc97ed72493ead839cfbf15c034f22928bce4cea817a6d055510

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