Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c1cc413705a560…

MALICIOUS

PDF

45.9 KB Created: 2020-08-01 02:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d3c47489eff1c78eaa93ab7c63b9415 SHA-1: b64f27c422b99386c623df1f678155d030971ec4 SHA-256: a6c1cc413705a560593416dec2941016bf20cb0b636f32e9af7cd7de5bb3ec19
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used to obscure the final destination. The document body, though heavily obfuscated, contains text related to 'ati teas study manual pdf' and the malicious URL itself, suggesting a lure for users searching for study materials. The presence of numerous external links, including those hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content.

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.ru/pify?keyword=ati+teas+study+manual+pdf In PDF document text
    • http://files.daugustbaertlein.com/uploads/1/3/1/4/131453247/toten_sufeniwo_gutuj_dematazej.pdfIn PDF document text
    • http://files.lloydketterlingchristmascarol.org/uploads/1/3/1/4/131406075/d5ff040.pdfIn PDF document text
    • http://files.loyaltydoctors.com/uploads/1/3/1/6/131606876/bejodunefate.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/1/0435/5224/3861/files/blob_response_type_react.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/sotudoxalize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5294/1990/files/ruputadowonulabirajexije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/zupofowilepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/fields_of_kummu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/godovuwavagonusodufaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0831/8878/files/4575982311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/41038117614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/21418433899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/risemanukubusezalajelemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/forge_these_libraries_failed_to_downlad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/89985110032.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 2

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_off000073e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E6 5184 bytes
SHA-256: 11cf3f35a6b97750f529c007736d03f4d3b4f454e4b21626dc34e8f3cdfb3dd2
font_01_sfnt_off00008589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8589 10824 bytes
SHA-256: 77199197e318835ac9f89d96274f7abf1561c12d397750b5cffb44f9152fd9fa

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