Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ca06cf1a1240b9…

MALICIOUS

PDF

69.3 KB Created: 2020-08-24 11:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 429529964f12e6b532f9319cafc59d1c SHA-1: 854b99e17597e90215400d3d9655ecbac9c21594 SHA-256: 75ca06cf1a1240b90cdfaaabfcaafa74c740a41fc2f22d07c7b225539c5ec59d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, aiming to direct users to potentially harmful content. The embedded URL, 'https://ttraff.cc/pify?keyword=subject+verb+agreement+worksheet+with+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting a phishing or scam attempt disguised as an academic resource.

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=subject+verb+agreement+worksheet+with+answers In PDF document text
    • http://fibova.hiesladybears.com/uploads/1/3/1/4/131438437/pugabutisimated-jubisopadomaf.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/1/0432/4874/6651/files/70380814758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/76100928029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/nowolik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1466/8959/files/13514100592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/luxupeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/academic_writing_skills_3_student_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/antivirus_for_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1043/2930/files/veletubexiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/derexonagalobofakik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2013/2247/files/business_plan_for_restaurants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/jewusotifijixiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7678/files/pileneseligo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75A 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off0000d155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD155 5716 bytes
SHA-256: 7969bfdaafc2062814a2f0ced339f0fb5d6231bad77a91784c1347a75d74282e
font_02_sfnt_off0000e4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B9 10156 bytes
SHA-256: 4e67ff9de9bc6e20fa6d6cbc2ed4f5db7f65f2d7356fa1a3fe6c648b19c13545

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