Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a6afe0f5761e71…

MALICIOUS

PDF

33.0 KB Created: 2020-08-13 00:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63a647fbc65a6e382c9995221afb0b65 SHA-1: c57cc29f73ed17821cca55ebe88e64d21d2ea4dc SHA-256: 10a6afe0f5761e71145460c83dce92007aa59f74dad866de9b9dfaa7524a8d85
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.com) which is known for malicious activity. The document body and embedded links suggest a lure to download academic-themed PDFs, likely as a pretext for phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the presence of numerous external links, including a redirector, supports 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=flight+stability+and+automatic+control+robert+nelson+pdf In PDF document text
    • http://gunat.gracechristianvisalia.org/uploads/1/3/0/8/130813042/2709218.pdfIn PDF document text
    • http://files.mrssimslit.com/uploads/1/3/1/4/131408928/selofutekamasum-dupewebotunako.pdfIn PDF document text
    • http://zemal.pengybrooksilkenwindhounds.com/uploads/1/3/1/3/131379312/44db8.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/1/0429/5720/9766/files/42624758850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4349/9677/files/applied_ballistics_for_long_range_shooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/rezawaveko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9795/5229/files/83774664045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/tugipotosofakefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/mirebezefovuwawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/employee_provident_fund_act_1952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/dajutazawitiwigijafomifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/3844617371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/49788392821.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_off000043ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43AB 5764 bytes
SHA-256: cf8590d68bdc43c306e1cc1fda5faf390ddb0525ae128cba08e4ad251716275e
font_01_sfnt_off00005718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5718 9288 bytes
SHA-256: 7ea8a88a5ba5d10053451e6e44b1be1e73bffd121b86c06d328cf253ce9c1b4e

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