Malicious PDF — malware analysis report

Static analysis result for SHA-256 c814c7db5b288575…

MALICIOUS

PDF

126.3 KB Created: 2020-07-30 14:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 882cfd0addf43023f0cc9bc7c21f9cc2 SHA-1: 76fb94da38adafb356e61f1322dc12525f80a0d7 SHA-256: c814c7db5b288575164330878709cce3605bb0dbfe646ab7abe3204a58f2182b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addressed T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. It also contains a heuristic for a PDF link farm, with numerous links hosted on cdn.shopify.com. The document body is heavily obfuscated, but the presence of these links strongly suggests a phishing or malicious redirection attempt, likely to deliver a second-stage payload.

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.com/pify?keyword=greatest+common+divisor+algorithm+pdf In PDF document text
    • http://files.catninga.com/uploads/1/3/0/8/130813898/cd6a9.pdfIn PDF document text
    • http://files.pbadesigngroup.com/uploads/1/3/0/8/130815026/1893215.pdfIn PDF document text
    • http://files.deliciousdesignsbysherry.com/uploads/1/3/1/3/131381540/6b1193d6c.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/1/0432/6224/7080/files/6448520167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/69304624465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/55645139760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/ponoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/72604866113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/pufaluluvebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/99236447737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0963/7533/files/80678846687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1438/files/lesumugis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/62360622095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/41096781883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/73541759803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/jinajexe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BA2 3852 bytes
SHA-256: 1ba1da2a17e7f89ca23c05a697407255099254985897c9cacaf8780af9b33d65
font_01_sfnt_off0001894c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1894C 5448 bytes
SHA-256: 796f8d80a3a28c514f7effc99ccd285c85484a300eaa0e27c316dcaf240820e0
font_02_sfnt_off00019bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BAD 17880 bytes
SHA-256: c49cb4f92b963d7aab63cc6ca8f822b229cff151ffaf71e0f8b34c93dc03e20d
font_03_sfnt_off0001d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D45D 16476 bytes
SHA-256: 9e7ef68b275ea5e2b3dc4251298e0bd24d5e54325992881ebae66ef871c2b8f7