Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c103c8c357fdd65…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 05:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80aa915eb2114ff8319082ae9a7a8597 SHA-1: 1c5523b5fac9ac85b0a0d5d1503ed6b95f9fbc44 SHA-256: 6c103c8c357fdd650728558091b768d3286130d1c1cdbf7d263f559b89df70b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to a redirector service, indicating a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=types+of+relationship+boundaries+worksheet, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to drive traffic to malicious or phishing sites.

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.ru/pify?keyword=types+of+relationship+boundaries+worksheet In PDF document text
    • http://files.shakespeare-garden.com/uploads/1/3/0/7/130738710/e4de2b84c6.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/1/0432/5782/3390/files/75043734947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/devunosipus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/78168311758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/antihistaminicos_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/324516055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/25920436355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6553/0785/files/fundamentals_of_logic_design_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0370/7296/files/adsorption_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/minecraft_highschool_rp_server.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_off00006e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1E 5476 bytes
SHA-256: 29aecf0c89528c6dc3ee8bda7cde3883b26462846a495b888b2e529674855b06
font_01_sfnt_off000080c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C9 10796 bytes
SHA-256: 7f49d7ca13be3fb7da33087e0f9cfa99df22b97e914e89a723ab4d5cd9d05756

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