Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7dd3d0a704d9b2…

MALICIOUS

PDF

72.5 KB Created: 2020-08-31 15:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08948acbbb110ca8a694e8c92eb60d61 SHA-1: fe87078fa7eb14f1bb83dcdee7daa00d56c46ad4 SHA-256: 3f7dd3d0a704d9b215b2e00c14ee3931dfa41e9160bea96bd6d2ec14a74b8ed5
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to a redirector service (ttraff.com). This indicates a link farm designed to obscure the final destination and potentially distribute malware or conduct phishing. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, but the PDF structure and heuristics strongly suggest a malicious redirection attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=aggresome+formation+microtubules In 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/1/0437/6811/9445/files/joveruleforol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/zododot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/functional_group_analysis_worksheet.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_0ba8c921d20f4d9cb83131dd3dd16904.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f0bbb218a3344a518b3ca18c344ff1bf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_550f68f02b6f4b3cba9e291ed6ac1e45.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/51c472_0d24b23f903a42fb891344c1d7af92db.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d5415a_342b76a329814976be09cb7e7e68bcd9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/tasovatutidun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/godupaduwupexedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2011/6380/files/sisivixiduwavewavumelez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/vigaxizojirexevora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/mosemejolovepawi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b88e3d_2c3314fc48ea413aadb0759aaf02cc6c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5a2b4f95692f4b54b6e802b59bb32fc5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AA 5328 bytes
SHA-256: 23bec318529b34885db391e74462c06eaea6d1ed0780b7df8e50dc594234e9ed
font_01_sfnt_off0000d7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BB 12084 bytes
SHA-256: 87d1fbe6bf5fa4b4fe9f49915bebc4bd919e6b2f5daebd05371f92231ace6352
font_02_sfnt_off0000ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 16148 bytes
SHA-256: 43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7