Malicious PDF — malware analysis report

Static analysis result for SHA-256 8350c3a9e132039f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 21:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47a1bf4c407d89bd6c6e8c98db7bbdb3 SHA-1: 4cf5dee758911c73246a56b481ab9ffa566fd0af SHA-256: 8350c3a9e132039f893aa4c559315f30e57e160573475495447ae1cdf02e3cea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links to external resources, including a primary redirector URL, indicating a link farm or phishing attempt. The ML classifier strongly identified this PDF as malicious. The presence of embedded URLs and the overall structure suggest an attempt to direct users to malicious infrastructure, likely for further exploitation or credential harvesting.

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.com/pify?keyword=getting+input+in+python In PDF document text
    • http://files.ruggedmountaintaxidermy.com/uploads/1/3/1/8/131856492/5585303.pdfIn PDF document text
    • http://files.laika-the-space-dog.com/uploads/1/3/0/7/130739488/9166858.pdfIn PDF document text
    • http://files.ceramicsmaui.com/uploads/1/3/1/4/131453917/2628574.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/jikajagixiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/dezoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/veduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/70800967085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/bunamusisixomuxoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/xironizeluwadimawale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/40331832548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/mald_urban_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/resufivurofefilogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0584/4390/files/jump_the_shark_gif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/gelabizubezodafuvuzibaw.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 5

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_off00006344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6344 4580 bytes
SHA-256: 11475a82ce8523e9d780433dc6a96372e2d5cd73a504cb9eba521fee0819bd22
font_01_sfnt_off000072e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E8 10600 bytes
SHA-256: 784a1ec9896541be4ed4f4d8f0de5d5012dece18ffc3c10c827f694c29669ef2
font_02_sfnt_off00009709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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