Malicious PDF — malware analysis report

Static analysis result for SHA-256 13a9003eef7a4694…

MALICIOUS

PDF

49.9 KB Created: 2020-08-06 06:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d476cc3c19bfe7935948fd8df9810031 SHA-1: b267161a001dbf016756c25541ad1d90e6b77edf SHA-256: 13a9003eef7a4694e5d8c831381aa38bdc14714ecdc198e1c56692982afc5228
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though partially corrupted, includes the same URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the presence of many SEO-optimized PDF links further supports a malicious intent to drive traffic to potentially harmful 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.cc/pify?keyword=comment+cr%25C3%25A9er+un+algorithme+informatique+pdf In PDF document text
    • http://files.brijuni.studio/uploads/1/3/0/7/130738548/a51539.pdfIn PDF document text
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdfIn PDF document text
    • http://files.theilounge.net/uploads/1/3/0/9/130969056/palikovu.pdfIn PDF document text
    • http://fulibu.savetherockcreekparkdeer.com/uploads/1/3/0/7/130776262/lexaxufokaza-gezofifulew-tigivivorifutoj-berujovofake.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/1/0431/5833/9733/files/22939911012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0690/2950/files/25943683979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/26016845054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8070/3399/files/54610753946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/adventures_of_sherlock_holmes_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/augustana_boston_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/89500547040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/jojarap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/90151999542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/how_to_make_bullet_points_in_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5387/files/83767251219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5533/4055/files/nafepevawofekakowepub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000776e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 5564 bytes
SHA-256: 7bc0a76c71ddaa1901f9bd65a2784bd91990397eafb8bb92c47daca7f24535ff
font_01_sfnt_off000089d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D3 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00009260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9260 11928 bytes
SHA-256: 5137ec84ca27ecf18a105e2c0f7b7815c213aae1528d1939c1368a0c654a03d6

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