Malicious PDF — malware analysis report

Static analysis result for SHA-256 0372ad756567ae8d…

MALICIOUS

PDF

35.6 KB Created: 2020-08-25 07:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 095dfd49065e649e9f1464b98c41f426 SHA-1: 1045639c4526d49c53efb7bf6dbc2bffa3c85a5d SHA-256: 0372ad756567ae8d3392072a40b4d93ab1073be361f744daa664f04e2a315704
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including a critical redirector link to 'ttraff.cc', suggesting it's part of a link farm designed to lead users to malicious content. The document body text, though partially corrupted, includes the phrase 'Icivics race to ratify answer key' and the malicious URL, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=icivics+race+to+ratify+answer+key In PDF document text
    • http://files.viviankeenan.com/uploads/1/3/2/7/132740413/e98f1.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/1/0431/3815/4653/files/bhu_uet_agriculture_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4991/8362/files/free_birthday_gift_voucher_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/wanijuvobivaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4446/9927/files/dumagofodamadok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/parallelogram_method_of_vector_addition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/gidixudidofosavenatuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/fuwudaxutopujazemawox.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 1

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_off00004ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECF 5096 bytes
SHA-256: 8a5fa912a4e35637cfffea0f68ecd660cdd54fcf727818b05666243c59e5f4bb
font_01_sfnt_off0000604f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 9992 bytes
SHA-256: 0c144de81b5b1b76853bd430b0ec9b8d97fc5b90a333c639f921d442e11b0246

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