Malicious PDF — malware analysis report

Static analysis result for SHA-256 79fd18963bf2a294…

MALICIOUS

PDF

39.9 KB Created: 2020-08-03 20:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5301bc74aa86a4f57c2d919a20525bee SHA-1: 3cc20277bca03f4b265859c11c61396a7fb922a4 SHA-256: 79fd18963bf2a294fbd3bb429ad8f0448736a846f008654e2044de1706628d59
194 Risk Score

Malware Insights

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

This PDF document acts as a link farm, directing users to a malicious redirector at `https://ttraff.cc/wb?keyword=addition%20worksheets%20grade%204%20and%205`. The document's content and embedded links suggest a phishing or scam attempt disguised as educational material. The ML classifier strongly indicates maliciousness, and the presence of numerous links to external PDFs, many hosted on Shopify, points to an SEO poisoning or link-farming tactic.

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=addition%20worksheets%20grade%204%20and%205 In PDF document text
    • http://files.shoptrunnellsfarmmarket.com/uploads/1/3/0/7/130775286/5236563.pdfIn PDF document text
    • http://files.ocswimcall.com/uploads/1/3/2/6/132696465/6552502.pdfIn PDF document text
    • http://files.quadrium-aerospace.com/uploads/1/3/1/6/131636965/wumefenakuve.pdfIn PDF document text
    • http://files.erichreimer.com/uploads/1/3/1/4/131482931/negagakizali_lebekifi_wivonotuxe_wodozezadaf.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/1/0432/6031/3768/files/94853111148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/37176182297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/saneneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/wild_magic_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/79318010841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/36771207268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/dell_latitude_e7240_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/kezagamen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/github_bios_dreamcast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3042/files/gunojugibalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1818/files/18142396330.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 5

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_off00005e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1E 5412 bytes
SHA-256: 5abd4d678099784351276abe42f56edda0714e7a3f91397e7b0f744b02bc5d88
font_01_sfnt_off0000709d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709D 9992 bytes
SHA-256: 0da317cecb78caf506ccc4cefefe014768055ef8b249a5c5d5bcf276623dc000

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