Malicious PDF — malware analysis report

Static analysis result for SHA-256 8403e708ce2683f6…

MALICIOUS

PDF

58.7 KB Created: 2020-08-24 18:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a7bdb044b346d6d5dd5d55a364f0b88 SHA-1: 607d3dad691984b5297128e150ecd13d8c5c87f9 SHA-256: 8403e708ce2683f628b64295801448904c71a0f49caf670788c8b60e9ffce749
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure related to 'Android payment gateway api' and embeds multiple links. One critical heuristic indicates a malicious redirector link (https://ttraff.cc/pify?keyword=android+payment+gateway+api), and another points to a PDF link farm. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=android+payment+gateway+api In PDF document text
    • http://files.13dfiling.com/uploads/1/3/1/3/131398154/kewuwivuses.pdfIn PDF document text
    • http://lajetesa.theflergs.com/uploads/1/3/1/4/131452903/935819.pdfIn PDF document text
    • http://welodak.generationxgoesglobal.com/uploads/1/3/2/6/132695643/jofepoxidoma_sogekomumu_ludeliz_vuroju.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/1/0433/3341/9160/files/thus_spoke_zarathustra_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/descargar_numeros_romanos_del_1_al_5000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5498/files/navy_bluejackets_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/60431162067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/bagife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/kegufivotowujeved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/15305326926.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 7

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_off0000a6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F1 5252 bytes
SHA-256: 38386971ff70cc087501b6a53f6c8ad109ead23855c448d5c4fa5ad60eda61dd
font_01_sfnt_off0000b8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CB 10944 bytes
SHA-256: 7316363174d0f19410eb1bf822201714fc5d0b902174c078b113012e7cea59d2

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