Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b84d377b876faed…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 23:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6699d4c2b0dbdc77ff6558c042b2cf76 SHA-1: 4bcabd547e5f74977e465e27e9d63a67e58fbf16 SHA-256: 7b84d377b876faed8d3a2d7bc6674be72b217821fea483f5e0f8582e52d2e660
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'sbac practice test 5th grade math pdf', suggesting a lure to trick users into clicking the malicious links. The presence of a large number of external PDF links indicates a link farm designed to attract traffic.

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/wb?keyword=sbac%20practice%20test%205th%20grade%20math%20pdf In PDF document text
    • http://files.tickettoridegreatloop.com/uploads/1/3/0/7/130775786/zezikuzav.pdfIn PDF document text
    • http://files.furiousdaysk9.com/uploads/1/3/1/0/131070713/bae9a18ea0e0.pdfIn PDF document text
    • http://files.shauneb.co.uk/uploads/1/3/0/7/130776254/483066.pdfIn PDF document text
    • http://files.shoshoneriverfarm.com/uploads/1/3/1/6/131606550/2616268.pdfIn PDF document text
    • http://files.praisenyc.com/uploads/1/3/2/3/132302732/ad19df6df4c.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/1/0440/9750/3384/files/jenofilusapokipumaseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/xoxeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/gipadesufuwonowidiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/19617103581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6072/1829/files/supepitiguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8106/2805/files/minecraft_eu_to_rf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/minegavepalat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/soluputalunisajerewazij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/6990242988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/18569348807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/11096320207.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_off0000648b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 5904 bytes
SHA-256: ec502c7e6a57a335dd2b350976bcbab9b3e0b7ef413d22a3a77b3dc0d6a2b840
font_01_sfnt_off00007874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7874 9836 bytes
SHA-256: bb6eddb810db63145ece4b286184c9011adeb313041a79232355e38b1e851df7

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