Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf46c533970800a…

MALICIOUS

PDF

48.0 KB Created: 2020-07-27 23:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92dd5f392f9596d5910f3e4695f64833 SHA-1: a113ae625c0b09a0e69b1e37d88af63302ccce33 SHA-256: ecf46c533970800a4c30fd9d9932b07914ca5445cde4b69b93549cb3b1c72812
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.cc, which is disguised as a worksheet answer key. The document also hosts a large number of other PDF files, likely for SEO poisoning to improve search engine ranking and visibility. The primary malicious URL is ttraff.cc, which likely leads to further malicious content or exploits.

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=isotopes+and+average+atomic+mass+worksheet+answer In PDF document text
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.pdfIn PDF document text
    • http://files.bedfordpsychologists.com/uploads/1/3/0/7/130776639/wabusu-zixevife.pdfIn PDF document text
    • http://files.xtorch.org/uploads/1/3/1/8/131856195/bufelukugerimanifafa.pdfIn PDF document text
    • http://files.compassionstaffing.org/uploads/1/3/2/6/132681476/bonodijadegine.pdfIn PDF document text
    • http://files.infiniteecoclean.com/uploads/1/3/2/7/132710603/1061986.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/1/0433/0687/7080/files/34007792176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/zudiwujabeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/14440822805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/72200823497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/84408365089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2523/files/putujajoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/favadovefex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/tiramavoragariseril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6146/9596/files/xirixupesefadifow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/25916344810.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_off00007c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C78 5396 bytes
SHA-256: 3fded3b694ebaec80f5a930cb7156eaac4842f7e3426fb6acab955f3e0589a19
font_01_sfnt_off00008eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB1 10452 bytes
SHA-256: e58f684383bf58485c302a698dc0e1b048867c55c2327449f01cc9ebd05a8ced

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