Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf3394bfbdabccb…

MALICIOUS

PDF

52.5 KB Created: 2020-08-21 12:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75243953b63b53949997392667c05b0c SHA-1: 7dc978c90b3b25ab3ebfaabf340dd0baf0562fe4 SHA-256: 1cf3394bfbdabccbbd25a42d04e750d23de7eebfaabb1d205a5d2913593df1a2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=eso+lycanthropy+guide. The document body, though heavily obfuscated, contains this URL and other embedded links, suggesting a social engineering attempt to direct users to potentially harmful content.

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.cc/pify?keyword=eso+lycanthropy+guide In PDF document text
    • http://doxokodif.infantmassagenewzealand.org/uploads/1/3/0/8/130814328/75dce4e620fd2.pdfIn PDF document text
    • http://files.destinationsbydes.com/uploads/1/3/1/3/131384635/2e731.pdfIn PDF document text
    • http://files.whatnowlifecoaching.com/uploads/1/3/2/7/132740905/eed1bde9691c.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/1/0461/4966/4931/files/fidelity_investments_401k_terms_of_withdrawal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/90602389268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46391305542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6912/6309/files/smart_irrigation_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/xenoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3159/files/mebifer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/zilabonodofutaluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/83114447275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/clubbers_guide_ibiza_2002.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 4

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_off00009086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9086 5396 bytes
SHA-256: 4c04cacd02f884980f7ae35649e3bddee0a27ee255f5bef21796b310a86d71ad
font_01_sfnt_off0000a2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DD 10212 bytes
SHA-256: a284566825cbe7906226b31ee747e0efa36e27195622fb131810535f730c9892

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