Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a23393b82543de…

MALICIOUS

PDF

44.2 KB Created: 2020-09-02 22:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18ead27008a8d053568fd25a18fc9971 SHA-1: 1160d99e4fb5632a3eb72ea8d0ba66e120403e41 SHA-256: d9a23393b82543dec2f0094dc25bf9b207244ab3870a57cadca9dfaaf5c2d43a
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is likely used to funnel users to a malicious site.

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.me/wix?keyword=video+helper+default++folder 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/1/0433/5150/7112/files/bhairava_geetha_telugu_movie_video_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/vexopipebagodaresexuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/41870509987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/decimals_worksheets_grade_6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/af0aa9_6fc703314a4d4b6caa020b4ee644fb80.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/07ef24_5d10ac223b3d482e97f65b0b8d7cb179.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/10a4aa_4c007159db5b4d58b11739fe5a9b69ad.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_051ad0a2673f4287b6d7440a6db212f2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f967ac_f37bb44639834f359bf3276e27fa83ec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_810b0651ded14a6692ae7a369acc15a9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/185c00_e1579f43ecd744179c4fd795220a9560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/mibolenafixatefexiwivenib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/antagonistas_opioides.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

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_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 4916 bytes
SHA-256: af6e82b0e328e1c702027b5e1f129cced9b64978d97b2f60b631168672c2e93d
font_01_sfnt_off0000777d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 1936 bytes
SHA-256: d2cd98eda3bb301c349f83497b116709750aa4c373c9bd198ee53ee8aab646d3
font_02_sfnt_off000080bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BF 10128 bytes
SHA-256: e97bdc8af72a71ea33a0a8879081b4d3b67d7c7497ea0922f386322e471f38f0

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