Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4bf6e227a01751…

MALICIOUS

PDF

56.3 KB Created: 2020-09-08 14:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7eda19c143767975b0c6fa1e6d280377 SHA-1: ac56a31d70d3e5ddfbeeabc63041671d9e3e2070 SHA-256: 7b4bf6e227a01751e3668d1e6992a9e6cd79f0157f7b534c2bab6d40d21a90e2
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a lure for a browser extension or update installation, specifically mentioning 'Adobe flash player para android 2019'. It embeds numerous links, with the primary redirector URL being https://ttraff.me/wix?keyword=adobe+flash+player+para+android+2019, which is flagged as malicious. The document also features a link farm of SEO-optimized PDFs, suggesting an attempt to distribute further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=adobe+flash+player+para+android+2019 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/2b25b5_200fef49c91a4d16a98a59e7704392ed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b444d4_2f950485a2cc451abd0e61e6ba65821d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f4de5e_7239738e1c004deab33d7cace0906dc3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4208/5783/files/16128720194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/diwimitisisivokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/19713575270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0860/5859/files/mivezebinapunaroka.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_4c4d43f9789243fb815ba0b346574183.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9fc8c3_c0663df4fd264bc2b70daef70fb2623a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/60331048796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/94696861558.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00006c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 6832 bytes
SHA-256: 8ffa0a7012bdbc979f05a63d7f75e73875829669dce55cdcbc4c4d8d4cc6eb8f
font_01_sfnt_off00007dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 5844 bytes
SHA-256: 34bb875450bb4e3dfe8e2bf46612e2b93efc9602ea3f8aa48bee85ca76b160f4
font_02_sfnt_off000091a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A0 13980 bytes
SHA-256: 12aab8becbdc8347a24880f1aa0d3e6195b2f58a14ff21359ac29f3f1145c345
font_03_sfnt_off0000bdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF7 16316 bytes
SHA-256: 7f7a064eb72c1950057c4b5818e74c9c738203a5ae22394c32c93de0958da170