Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb818954c12b080…

MALICIOUS

PDF

42.3 KB Created: 2020-08-04 07:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec0dab460b4b2156e88b74c0f314785f SHA-1: db7832767a5491cb44aac41c148a9ebbda0031cc SHA-256: 9cb818954c12b080819ae718f2133088270a24a9aada4e30bd102308c99ab882
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body and embedded URLs suggest a lure for free PDF downloads, which ultimately leads to the malicious redirector at ttraff.com. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector is the malicious redirection.

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=english+translation+book+pdf+download In PDF document text
    • http://files.ashleynwatson.com/uploads/1/3/0/7/130738712/796ddb3f.pdfIn PDF document text
    • http://files.nemescreative.com/uploads/1/3/0/7/130776823/zavibekufojerekitus.pdfIn PDF document text
    • http://files.delandhsband.com/uploads/1/3/1/3/131379700/5821082.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/1/0429/4855/9004/files/rorezufinekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/free_xxx_incest_cartoon_pics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3339/3309/files/22222695046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/site_analysis_architecture_presentation_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/22750272474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/3434293011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/60931945652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/78457588684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8053/files/809019356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/lowob.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_off000066e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E4 5556 bytes
SHA-256: 2422a47b092d4c0aaa54b746b369423baa97a734a3af4415bc83fd20621ee52d
font_01_sfnt_off000079d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D5 10192 bytes
SHA-256: 6d86bb4ba3912da86211e18e093fa5295eaf74070a10a28d4a4bc933e4ae8412

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