Malicious PDF — malware analysis report

Static analysis result for SHA-256 9403a3c33cec828b…

MALICIOUS

PDF

251.5 KB Created: 2020-08-02 23:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9df899f2a4cb5f171325a093b155e80 SHA-1: 6678f0a1b0942c01c302f69a28a2a55383c2a955 SHA-256: 9403a3c33cec828bf4075de66cf8508096dfb13b912614edd36c0ab71debc7a9
134 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting it's the primary mechanism for luring the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.cc/pify?keyword=morrowind+short+blade+trainer In PDF document text
    • http://files.shadowofthestatue.com/uploads/1/3/1/3/131398091/eb25d.pdfIn PDF document text
    • http://files.lagrangehorse.com/uploads/1/3/1/3/131383665/6dd7bab24de8616.pdfIn PDF document text
    • http://files.foodloveblog.com/uploads/1/3/1/3/131380868/vosirijofa.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/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/86448271840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/texogakewefovodig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/fupezufaxaguxodemanuwawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/86777509383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5018/9478/files/kupexejodofogedoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2031/9893/files/muporaxodosajaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0964/files/20632549921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/poxidegobupipitomebegat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/kowivipezirusumatoripiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1396/3935/files/jeser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/bizarixagunabekam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/77218656562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/47299443814.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003a63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A63C 5152 bytes
SHA-256: 8140cde7bcdac7591317050cf0edd7efe531461d5c1995ebd24db266222ad023
font_01_sfnt_off0003b7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B7D2 12188 bytes
SHA-256: 1b2bbe03780c9ebb9c5f395e3ce1bfe0d815ce29fe7a895fa19258436973d28c

Open this report in the interactive analyzer, or submit your own file for analysis.