Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c7dc710d97030f…

MALICIOUS

PDF

34.2 KB Created: 2020-08-14 01:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d5b343a51c082efc96b3f470fa0ff69 SHA-1: 3c6ef3b65ca3e3f7d04a0dae7db2209dd653aabe SHA-256: 11c7dc710d97030f018ca9149d2ad0ab2df6d57659b7b46c35338a61e5d9c26c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure, possibly for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=past%20tense%20irregular%20verbs%20worksheet In PDF document text
    • http://files.musee-militaire.com/uploads/1/3/1/3/131381464/ffef5cb206.pdfIn PDF document text
    • http://files.caravanoflore.com/uploads/1/3/1/1/131163832/sexosodetagov-bibelu-liviruzo.pdfIn PDF document text
    • http://files.drconsultinginc.com/uploads/1/3/0/7/130775747/83554ec9ffe2f.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/1/0432/7427/2924/files/vitowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/wuzelif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/rotugidemuluxijux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/46134552661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/7378318233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/83943694889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9335/1843/files/chac_mool_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0824/4381/files/fiditit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/4578203154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/44301042640.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A46 5304 bytes
SHA-256: 8127cde6213cb1b5ae09d7781a974281c7d7917081d953c2163d9ea68201c4fe
font_01_sfnt_off00005c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5A 9360 bytes
SHA-256: a6a88b6006a55ea0470931cb4645a63aba3bd0aac296b23c31611dc3241ccb21

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