Malicious PDF — malware analysis report

Static analysis result for SHA-256 607402465c9e04a0…

MALICIOUS

PDF

37.5 KB Created: 2020-08-20 23:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8994fdd31dccb827c9ff7754ccbccd75 SHA-1: 587127590805f55b524696a8145778b30c077e1c SHA-256: 607402465c9e04a0731069a0d4f5183db14a1228ff3890cd39f22d743aada646
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=derivative+of+exponential+function+worksheet' which is also flagged by heuristics as a malicious redirector and part of an SEO link farm. This suggests a phishing or scam attempt to redirect users to malicious content.

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=derivative+of+exponential+function+worksheet In PDF document text
    • http://files.bluebirchoutfitters.com/uploads/1/3/1/3/131398091/2065090.pdfIn PDF document text
    • http://files.hmsplymouthassociation.org/uploads/1/3/0/9/130968984/kadofoj.pdfIn PDF document text
    • http://nosenuj.yaph-studio.com/uploads/1/3/1/4/131407435/bbedb4bb4ad03.pdfIn PDF document text
    • http://files.sittingroom.org/uploads/1/3/1/4/131453268/6781067.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/1/0435/9992/1315/files/56469100032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/birowemuziwewitinijojifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3414/files/tutorial_adobe_indesign_cs6_bahasa_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/35562595125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6411/4852/files/political_map_of_world_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0318/2243/files/barrister_parvateesam_telugu_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/99933280528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/lesadogujonoxirenirik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6528/9378/files/the_catholic_priesthood.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/mockingjay_anderson.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 3

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_off00004e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E27 5388 bytes
SHA-256: 18ee2e4dc171cea9f8b60d216557c638928f0fbd399cf448d39820ece1ac9b85
font_01_sfnt_off00006093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6093 12716 bytes
SHA-256: 6f9ef3239ffd8a3b8b3e6d77240bcdc2f231fe8371b3542dad7c318691ba5e05

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