Malicious PDF — malware analysis report

Static analysis result for SHA-256 d836f8fc89c20b93…

MALICIOUS

PDF

368.4 KB Created: 2020-08-07 16:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69b377adcd7db29b9f23724fad5375a1 SHA-1: 2c811c48a0afa8bd9f201d40cef044eb1142ada5 SHA-256: d836f8fc89c20b9354dab8ba205b27249fa70321714505d5a7937172cff2b1b9
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to trick users into visiting a malicious URL, likely for further exploitation or credential harvesting. The embedded URL is reconstructed as 'https://ttraff.com/pify?keyword=fractals+in+molecular+biophysics+pdf'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • 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.
  • 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.com/pify?keyword=fractals+in+molecular+biophysics+pdf In PDF document text
    • http://files.emaginedthis.com/uploads/1/3/0/9/130969633/9201111.pdfIn PDF document text
    • http://tegiw.crescendofarm.com/uploads/1/3/1/6/131637881/8e90e03d25e4328.pdfIn PDF document text
    • http://files.ufabmoms.com/uploads/1/3/0/7/130775470/bugisejejonezemuto.pdfIn PDF document text
    • http://files.naplesbesthairsalon.com/uploads/1/3/0/7/130776033/mukeminojomade_deraragibimuti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/pejekipotivoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/software_engineering_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/vikodez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8225/8334/files/84799973185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/sefam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/sinoxobolavinerov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/93741334897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5071/files/setelasusubadazosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/3179052457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/algorithms_and_flowcharts_in_c_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/lubifuxisuralefewulepama.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F92 5472 bytes
SHA-256: cf8ed93aaa9457b328eb70e1da5970e37c950e9eecad7a8fecac26fbd35eab6d
font_01_sfnt_off000571f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571F8 16268 bytes
SHA-256: 47dd3f1f1e73e603bfbdb356db64c40c4eeefa9b25705af7d6f216be9835d4ef
font_02_sfnt_off0005a47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A47D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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