Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe9eb45b278c66f…

MALICIOUS

PDF

49.4 KB Created: 2020-08-24 21:24:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3a27a142521d99e39f09a2e7805408b SHA-1: 6fa49e5118f91aecffdfbf60bdfacda68dc90e59 SHA-256: 8fe9eb45b278c66fad818dea02691e0806b653e0182284d4a5fd2e054e018636
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a lure of 'teacher guide book pdf'. This indicates a phishing or scam attempt. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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.com/pify?keyword=teacher+guide+book+pdf In PDF document text
    • http://files.growing4hisglory.com/uploads/1/3/0/7/130776887/970428.pdfIn PDF document text
    • http://files.westernslopescale.com/uploads/1/3/1/4/131483098/wutoxifigo.pdfIn PDF document text
    • http://majuf.robertstindle.com/uploads/1/3/2/6/132695887/2438134.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/89429549700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/personality_disorders_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8646/2628/files/data_analysis_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2994/5758/files/lionel_zw_transformer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/85085291017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/carbohydrate_in_organic_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/pituruwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/64449803122.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F2 5056 bytes
SHA-256: 29651a25e2b905fd14083931c7f987366be7a66219d600c60befe96f85a5ebdb
font_01_sfnt_off0000892a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892A 9936 bytes
SHA-256: 69591e5e7012d19f5a3c93114a55b125a9b46f3b617dd649370bcd65f2c5d234
font_02_sfnt_off0000ab30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB30 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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