Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84d2263abe0d33a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 05:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dec58690509835840d96a475d62f354c SHA-1: da5ac80a472cfdadc67250554cb0a2bfedb4f269 SHA-256: b84d2263abe0d33ab4f2401d610d64626f639426939c3b732f709dbb8bfd8254
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of SEO manipulation or a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=smooth+papyrus+font', which is known to lead to malicious infrastructure. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.cc/pify?keyword=smooth+papyrus+font In PDF document text
    • http://jubusuvos.creasyspeaks.com/uploads/1/3/1/4/131437792/686f92d.pdfIn PDF document text
    • http://files.kathrynjfogleman.com/uploads/1/3/0/7/130775506/mukugilitomad.pdfIn PDF document text
    • http://files.whatnowedtech.com/uploads/1/3/1/4/131407164/09059ff.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/1/0431/5398/1594/files/kelvin_to_fahrenheit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6539/9713/files/vakunezegujosogotux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5299/8556/files/75682183133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/sibonovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/3111494265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/mute_words_on_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/84652810547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/encyclopedia_of_general_science_for_general_competitions_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/tatusujarasigemediguti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9121/files/brown_butcher_paper_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/gamuwetena.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_off000064ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EC 5316 bytes
SHA-256: d9b08c750e7d52b36d00d20ac2d2bc9a336a1f1e834512b6d1bd0d99c2cab2e1
font_01_sfnt_off000076e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 10288 bytes
SHA-256: dd5e2b0d4d15273569ac5d82f7adcb77dd733200b716b0096e790841419f56a8

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