Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7c77ca3f929df5…

MALICIOUS

PDF

42.0 KB Created: 2020-08-07 16:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8a1871dd6afbca6743922a6371613d9 SHA-1: 0adfbfe7a463eb1cd13b6853921af31fe4844287 SHA-256: 0d7c77ca3f929df5ab4b144dfeae9c3fefc281ad829bb76413a6afccabb027f7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. This indicates a phishing or scam attempt, likely using a lure of free content to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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=cours+d+orthographe+ce1+pdf In PDF document text
    • http://files.campbellscostarica.com/uploads/1/3/2/7/132740659/5847656.pdfIn PDF document text
    • http://files.littlestar-emanations.com/uploads/1/3/1/4/131407047/ace5875f68b2c.pdfIn PDF document text
    • http://files.ridemchorses.com/uploads/1/3/2/6/132682585/gesidijoketijaxelapi.pdfIn PDF document text
    • http://files.littlecrittersfarm.net/uploads/1/3/0/7/130739544/zerezaguvasevasaveje.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/1/0427/9291/1007/files/fajufazatudiwudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2403/0618/files/ashok_kumar_singh_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/flip_tables_emoticon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/kuzetirikela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/13693579719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85213016947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/13809528220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/28806720163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/jafugaxiguvatubipifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/25089916659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/cantilever_building_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/48481737524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/macos_restart_vnc_server.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 5

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_off00005c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7E 5340 bytes
SHA-256: 58912ee1813466ad3f513030ffbbb65411d8d88c9e0f4be4852dc3f069db6631
font_01_sfnt_off00006eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 14064 bytes
SHA-256: 2c4e080a2516875f0e2d6fcf7209b09c5c747f925296ceea7ba171a05cdb079b

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