Malicious PDF — malware analysis report

Static analysis result for SHA-256 f294a0dd843cc155…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 18:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c50b1c1120fae00f9438925c231c3a11 SHA-1: 06ae9e4aa86b64bbe6ce1f19abffa4f60e835a2c SHA-256: f294a0dd843cc1551e74b31d99d444a05b8a662d49988748a7b34c4d062d8cb5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the malicious URL is sufficient evidence for this assessment.

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=assembly+line+balancing+problems+pdf In PDF document text
    • http://penel.imaginationlab4kids.com/uploads/1/3/2/7/132741009/1300110.pdfIn PDF document text
    • http://files.lisaperi.com/uploads/1/3/1/4/131437041/3061558.pdfIn PDF document text
    • http://sebiteki.calvarylutherancs.org/uploads/1/3/0/7/130739017/ruxijigipefin_megegituwurigo_xatumiv_kulovojuxo.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/1/0461/7702/6201/files/amul_annual_report_2018-_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/tapukinegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/march_madness_bracket_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6991/4790/files/gevila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/responsive_food_website_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9735/9261/files/chloroform_isoamyl_alcohol_preparation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7178/9469/files/3645561982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/didozuxaloxiwebugine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/38516690067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/the_collected_short_stories_jeffrey_archer_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8085/0335/files/9481735498.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 1

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_off00006ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB8 5708 bytes
SHA-256: 940f0de7d6035b45b6327fb06f879fb9b929196c111f75837d5f384658c94ffb
font_01_sfnt_off00007dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFB 9972 bytes
SHA-256: 278622124a423e866b9232153a1886a5638dd004932a271327efd4e26842aa42

Open this report in the interactive analyzer, or submit your own file for analysis.