Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c2374779bc95736…

MALICIOUS

PDF

40.9 KB Created: 2020-08-08 21:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8790a9166aea82b6423022c2e2362e73 SHA-1: 6ed7f635e68ed36d474a4c58369d0785d436aa07 SHA-256: 3c2374779bc95736ccecf00464356f1defef2a3592d1dd0dfecdb27b6900bf73
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body, though obfuscated, contains text suggesting it's related to 'anexos definicion pdf', reinforcing the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=anexos+definicion+pdf In PDF document text
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdfIn PDF document text
    • http://files.nextgenna.org/uploads/1/3/0/8/130874148/c7e83f5d33e.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdfIn PDF document text
    • http://files.josephrossiter.com/uploads/1/3/0/7/130776498/rovaxazeretaraw.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/1/0433/0687/7080/files/zumimulapowekulusevenire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/turnigy_9x_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/xolosevoxibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/pikeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/cameron_diaz_body_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/92798476726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1345/3470/files/best_free_software_to_edit_documents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2109/files/student_s_encyclopedia_of_general_knowledge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/47902423127.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_off00006347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6347 4868 bytes
SHA-256: e4307e0a5d9675a55618a9d30e9851acd4659a004f98144317f7eaf47001d91f
font_01_sfnt_off000073ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 10200 bytes
SHA-256: 602fae04a0d416812b5c5692aaf141bf630416976c88c8a7cd10d70dd2243e31

Open this report in the interactive analyzer, or submit your own file for analysis.