Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec172de861e8160…

MALICIOUS

PDF

45.5 KB Created: 2020-08-10 22:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fb13c9d2211c83fb2a9c1a5bea9621b SHA-1: e8b377b20900234790e337e37724a5f12a13d586 SHA-256: 7ec172de861e81602886313cd8f36df5fcca7c1eaedfa66ebfbe259f34bbacb3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.com). The heuristic firings indicate that this is likely part of an SEO link farm or a phishing lure, attempting to drive traffic to malicious or unwanted content. The ML classifier strongly supports the malicious nature of this document.

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=benefits+of+artificial+intelligence+in+education+pdf In PDF document text
    • http://files.offtovenus.com/uploads/1/3/0/7/130776786/9292976.pdfIn PDF document text
    • http://bolifo.kikwetujournal.com/uploads/1/3/0/8/130874631/724238.pdfIn PDF document text
    • http://files.myviewpointon.org/uploads/1/3/0/7/130739789/wiserasibop.pdfIn PDF document text
    • http://files.rbpaintcompany.com/uploads/1/3/2/6/132682282/xozokotafoferit-kugur.pdfIn PDF document text
    • http://fipewima.myrabbisings.com/uploads/1/3/1/3/131384401/gakos.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/1/0433/0009/4112/files/2130310607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/22571173202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/vejebaxawesupisinafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1465/8980/files/52745172484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/pigotuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/notapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/rbse_class_11_biology_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/73591686078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.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_off0000741d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 5372 bytes
SHA-256: 032ac26972fa165533172abfa7f2dd3fccfba26ed2815ccc10e24577ff6ebb70
font_01_sfnt_off0000866b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866B 10032 bytes
SHA-256: 01e260b6fafec57e930d8e83d4d132a6b883af5aa0f247ddc21fb5b940d8e21b

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