Malicious PDF — malware analysis report

Static analysis result for SHA-256 0661bed9bce7be85…

MALICIOUS

PDF

40.6 KB Created: 2020-08-22 01:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64dc82d3c3c832f5cfd4c73893226b41 SHA-1: beea1540fedc9084013f22a926c41892d304d097 SHA-256: 0661bed9bce7be850e2a75cc0953473f8fe004edad252e647c46cfb4661dc4e2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URLs, particularly the one pointing to 'ttraff.com', are flagged as malicious redirectors. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the lure.

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.com/pify?keyword=us+federal+reserve+balance+sheet+unwind In PDF document text
    • http://files.newindanderyd.com/uploads/1/3/2/6/132681343/bidesowezoparof.pdfIn PDF document text
    • http://files.mandalaband.net/uploads/1/3/1/8/131857782/samalus.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/1/0428/2282/8198/files/butog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7606/7228/files/autocad_2013_keygen_x-_force.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/bididanisaparelavog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/pirates_of_the_caribbean_music_score.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/29804539521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/52120541836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/anemia_aplasica_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/danibudiboxewekixoguvipim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/vupikuxarotisibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4338/0631/files/m_board_4chan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/bolagojarovefetagufime.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 1

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_off00006040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6040 5392 bytes
SHA-256: 0d9673dbbd0d895e9e87dd3b0c3f3ffc0a3c97ff9aba79b97a3fc6e7eab92429
font_01_sfnt_off000072a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A0 10408 bytes
SHA-256: 3e22ec6266d84ebfd675cdc4b08350989ee9e9ec311aae4fe3a1f7fcb01eac35

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