Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e8ff0ca7e7c341…

MALICIOUS

PDF

54.2 KB Created: 2020-07-30 13:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c82b30e642b9a0ba0722cd270f5bdd89 SHA-1: 226602b9d0aa80f67152b5c2ed99917724ec3352 SHA-256: 63e8ff0ca7e7c34145a8da1f5d730c59a35c716db3c21fade923c8ab22b590f4
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=ielts+writing+task+1+book+pdf`, which is flagged as malicious. This indicates a phishing or scam attempt, likely using the 'free download' lure to direct users to harmful content. The ML classifier strongly supports the malicious nature of this PDF.

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=ielts+writing+task+1+book+pdf In PDF document text
    • http://files.someoneelsemovie.com/uploads/1/3/0/7/130776826/7223251.pdfIn PDF document text
    • http://files.advancedmaterialsservices.com/uploads/1/3/0/7/130776230/nafumijaz.pdfIn PDF document text
    • http://files.babyneenee.com/uploads/1/3/1/4/131438195/4128462.pdfIn PDF document text
    • http://files.abbotswoodaction.org/uploads/1/3/2/7/132740350/lotoso_tewex_tabapirabuwit.pdfIn PDF document text
    • http://files.samuelcolemanfamily.com/uploads/1/3/0/8/130874569/duxopunipudaminep.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/1/0437/1424/8857/files/30540020543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/95399643057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/18247811192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/nipolamexusum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/wazosegiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/23850439959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/semewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8603/6646/files/6053472631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/raguzamodisosafojuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/xuzexugubomemukew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5094/3142/files/32981621994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4853/2128/files/60245888203.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_off00009587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9587 5284 bytes
SHA-256: d3804ea012b8201d41393d863858be4b2004df1de6b4d2726ccc274c9f49e775
font_01_sfnt_off0000a792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA792 10480 bytes
SHA-256: a78b1e3fd58e299d7274b292fe555c3609719125ba21c4e33a717631f7ac913d

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