Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8781063e3ca0de5…

MALICIOUS

PDF

55.6 KB Created: 2020-08-21 20:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b145e5764addbb3583f36453a9c28d28 SHA-1: a3c834e4a05c71473a20fcc15e1dd2f7351b0f26 SHA-256: c8781063e3ca0de5def927a17a3bde11cea39407e8106b934de425cb99ff1af4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring users to this malicious redirector.

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=phrases+and+clauses+exercises+worksheets In PDF document text
    • http://files.healingrootshypnotherapy.com/uploads/1/3/0/8/130815277/mubitagimerutalil.pdfIn PDF document text
    • http://tibor.olivetreeyoga.net/uploads/1/3/2/6/132682883/moxoza_guzumasuduge_bemolunoj.pdfIn PDF document text
    • http://files.vidlersautomotive.com/uploads/1/3/1/6/131636642/5cc768459.pdfIn PDF document text
    • http://tekeje.gonzaleschc.org/uploads/1/3/1/3/131380213/f11db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/58546100243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6214/0568/files/sowuretiviri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/principios_da_astrologia_vedica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/calendario_ottobre_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8842/0520/files/15856606552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0949/9558/files/75452448514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9121/files/38703142758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumatuzonew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/29356269690.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8309 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off00008d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D04 5132 bytes
SHA-256: 13112e6b07320aee9a2e1690ea42c6f1e13d201e39d0978e638dc61ab691a9ca
font_02_sfnt_off00009e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E78 10104 bytes
SHA-256: ed4f6d4ba04c43d66c719de4ac4dc8a0eda482cbd9d57af949d2cb953c4e6bca
font_03_sfnt_off0000c0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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