Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa3cd39c103c4a1…

MALICIOUS

PDF

163.0 KB Created: 2020-08-01 17:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e64eb8ce1158ee950a4b12f4edb92ab3 SHA-1: e6813f7ca794df6af71695730a1e69b410f76fbe SHA-256: 1fa3cd39c103c4a142b99f417da0e6d9057d031b31ee9c197be37746d187151c
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.ru', which is known for malicious redirection. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=fluid+mechanics+solution+manual+pdf In PDF document text
    • http://files.chayalester.com/uploads/1/3/1/6/131606617/mawaguxo.pdfIn PDF document text
    • http://files.northernmarineinc.com/uploads/1/3/1/4/131437987/nuregeg.pdfIn PDF document text
    • http://files.suzannepetrizzi.com/uploads/1/3/0/9/130968956/jakibimagusilumodete.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/1/0436/8983/6697/files/38064797131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/vetasemizuterewomavofaref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/92381608271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/59374551482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/ponig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/45436963371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/95379561536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/22982833959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/65758132284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/82499667693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/22954394091.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21918 5252 bytes
SHA-256: 432a6036642ff1d0c60361eaa1d026b2ccae74951262f983fe7fe93047ec279f
font_01_sfnt_off00022ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22AD3 18924 bytes
SHA-256: 8bb9bef2bd294d1ae421ce117ad602cb9496e8dd7bda22be960573fd85c49b2a
font_02_sfnt_off0002657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2657F 16520 bytes
SHA-256: d0d2d3015ecf217901ba527836e477c408fe63ade9db3fb4aaeae3be234b5f0c

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