Malicious PDF — malware analysis report

Static analysis result for SHA-256 843358d0ef7abef8…

MALICIOUS

PDF

43.7 KB Created: 2020-08-19 03:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79a1a44e81abc06c0c87e8cd5f1524f9 SHA-1: c220d7a57b88b5b118d320a8758e4524706f8852 SHA-256: 843358d0ef7abef85c9358d861908612b5f69fef03f8bd24553c139d517892d9
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=android+run+at+command', which is also flagged as a malicious redirector. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or malware distribution, aligning with a spearphishing attachment attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=android+run+at+command In PDF document text
    • http://kajep.overthemoonbirthing.com/uploads/1/3/1/3/131383664/zowiliwepus_wiwimejibelox.pdfIn PDF document text
    • http://files.mountaingorillacoffeetours.com/uploads/1/3/2/6/132682230/685f92b8ec.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/1/0434/0206/8131/files/causas_antropogenicas_del_cambio_climatico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/driver_mouse_razer_abyssus_1800dpi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2934473971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/tipidaranitufozije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/savurekok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/landscape_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/90971757336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/nufijixumebidutitesuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8365/1490/files/aleksandr_dugin_libros.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 2

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_off00006f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 4864 bytes
SHA-256: 724fa7ccde87a8fccbcf4903c95aa05e823e1f3b6895a1143f357b1348141062
font_01_sfnt_off00007f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8A 10120 bytes
SHA-256: a0b661e87296a8eda80ace988e7d551fcbedb2adb74cbac67eeea02d379ae9fd

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