Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff8f2686dd45fe7…

MALICIOUS

PDF

36.0 KB Created: 2020-08-14 07:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fb6bc96b22859634c4d6454555a61c8 SHA-1: 34f4d2158f4ddbc26c36d81f62b3aee7f31e586f SHA-256: 3ff8f2686dd45fe7c434f69212f4533ba5a5c631d387f00a05558510952e1c06
194 Risk Score

Malware Insights

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

This PDF document contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=law+of+gravitational+force+worksheet, which is used to redirect users to potentially harmful content. The document's structure and embedded links suggest it is part of a larger SEO poisoning campaign to drive traffic to malicious sites.

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=law+of+gravitational+force+worksheet In PDF document text
    • http://dobumini.simplyhooked.co/uploads/1/3/1/8/131856713/mirarugegato.pdfIn PDF document text
    • http://files.weareoneflowyoga.com/uploads/1/3/2/6/132695405/7265236.pdfIn PDF document text
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.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/1/0431/0568/1562/files/44120877330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/75349624744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/gumatezokitujovuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8104/7957/files/61793317650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6752/3743/files/astm_e83_16.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/60497262845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6412/1757/files/moment_area_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/miporomenanisufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/7560863017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/erosive_gastritis_treatment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/pasudarunetilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/66823291627.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_off00004d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D51 5300 bytes
SHA-256: 508d902a53a663cfb5cf8491bcd215dd70cc06902191a07ba4f6dd5a9dfffa32
font_01_sfnt_off00005f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 10500 bytes
SHA-256: c791dac74584aece035d6b9b405b0faa7e8db2bf5a1f3b51ea0a2b3c8f1a9c3a

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