Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fef1516bc33f94b…

MALICIOUS

PDF

55.5 KB Created: 2020-08-05 10:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4504605caff362b85775137bd34f91c2 SHA-1: ca6fd87b174c2d8e4f0d56ed5f05605e0f08a935 SHA-256: 0fef1516bc33f94b66ab42b73092558f8bb608570eddb1c9a060adea58a14153
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious SEO link farm, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests an attempt to trick users into downloading further malicious 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=diabetes+en+el+embarazo+pdf In PDF document text
    • http://files.simplysailing.ca/uploads/1/3/1/8/131856852/1930131.pdfIn PDF document text
    • http://files.ezkennel.com/uploads/1/3/0/7/130776273/0d87a617d964dd.pdfIn PDF document text
    • http://files.onebeautifulearth.com/uploads/1/3/2/7/132740852/wevanejolafuno_bojewijelukova.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/1/0431/0306/0128/files/international_carrom_federation_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9673/4885/files/8378271797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/finesokagofebagovuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/nezajufoxaxerawajevuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3281/2439/files/36465892435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/bomepidusibovuraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/brokensilenze_queen_sugar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/positioning_strategy_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/84517300681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/bug_boots_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/18302861018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7976/files/43909396415.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
🗂 Part of campaign: simplysailing.ca 3 samples

Related samples 5

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_off00009ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC5 5376 bytes
SHA-256: c5b72b908ad6be3b0ee4ba06a36a6dba9898f11a7f348b3aa43cabae390d7de4
font_01_sfnt_off0000acfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACFD 11116 bytes
SHA-256: c5d0ff5fd7ca14bccf63ce87decb9aedcd57dfb2bf7d3e96b8d27e165be03a78

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