Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c1be7bb9a68873…

MALICIOUS

PDF

45.1 KB Created: 2020-08-17 04:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54cd29e8a99d2ca7ecb4609ed579a3f7 SHA-1: 99cf14ed3255c816606ebca8536704fcbce9b5a1 SHA-256: c1c1be7bb9a6887316e7e03800a8f312f5f2e1a4abbc7b73490fff0422847100
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, a common technique for SEO poisoning or creating link farms to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=software+conceptual+design+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the template lure and the malicious redirector URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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=software+conceptual+design+template In PDF document text
    • http://madavanuf.cabogoldens.com/uploads/1/3/0/8/130874049/kunegod.pdfIn PDF document text
    • http://files.inter-clubtennischampionships.com/uploads/1/3/1/0/131070207/8532081.pdfIn PDF document text
    • http://fapak.gabrieliqbal.com/uploads/1/3/1/8/131855997/3108598.pdfIn PDF document text
    • http://files.getjohnsoninsurance.com/uploads/1/3/1/4/131438459/5dad5b5c.pdfIn PDF document text
    • http://files.mrwaldau.com/uploads/1/3/2/7/132740900/d7c21cb8d83e4.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/1/0428/0962/2695/files/3009769867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/23427420651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/technical_analysis_investopedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/bixiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/2735/4015/files/tujobufogab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4034/2169/files/52224932550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/how_to_get_command_block_in_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/umbilical_cord_care_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/cyberlink_media_suite_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/65870565631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/window_7_genuine_activator_software_free.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_off00007159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 5668 bytes
SHA-256: b7ea3fa9b141245cfde75dce0467d816b631958e6cb0718667a38639f148a191
font_01_sfnt_off00008497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 10176 bytes
SHA-256: c8d3296ca6dcb44a23a46c166c056331b454f7bfeb8b8636cefbe39a9026291d

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