Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ee8c6b53eb9cd0…

MALICIOUS

PDF

44.0 KB Created: 2020-08-10 03:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac1a44b7539c64c977b564d73fc336a5 SHA-1: 078a55b8973f960f23a768f26b433362537fdde0 SHA-256: 61ee8c6b53eb9cd07c8997ad20148f35f65de75b05bedbc653e6aa87e6e957a3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL, suggesting an attempt to lure users to a malicious site under the guise of providing practice exams.

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=barron+s+toeic+practice+exams+6+tests+pdf In PDF document text
    • http://files.wisedemocracy.org/uploads/1/3/1/6/131636872/895d82c10b.pdfIn PDF document text
    • http://vixifi.ladyannestrunkomaha.com/uploads/1/3/1/0/131070450/d8ef34dacd4fd4.pdfIn PDF document text
    • http://files.jasminequill.com/uploads/1/3/0/9/130969218/128c160a6de68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2805/2130/files/street_dance_2_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/2015_2016_nfl_playoffs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/buku_rangkuman_biologi_sma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/81404865677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/pijiredudimuwogisoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/advertising_discord_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3390/2760/files/40470113316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/megutuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5012/3932/files/mcquay_centrifugal_chiller_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/vizova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/42776600478.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 6

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_off00004ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE6 5540 bytes
SHA-256: d4633149f5bf722b30a05065e6397a611eae6b6cbc8df0ed2ade22e9413ae61b
font_01_sfnt_off000061a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 11352 bytes
SHA-256: b8f9bece1d0f176ddb4eddb29b78f74402db96674c2b1d2c068fc96eb1b92d21
font_02_sfnt_off00008130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8130 9744 bytes
SHA-256: 7d5a1e409ad93981a399a469aa731e1bc14d7cccb3a037eb57265a197082f81a

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