Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c12e8154f72bb9…

MALICIOUS

PDF

94.5 KB Created: 2020-08-10 05:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d157d3742f782a1ad77610ca08d308b SHA-1: 6fe2318a45bea8ee4bafd7fa4ac09d237197d96f SHA-256: 87c12e8154f72bb9938c18b9b174e7dd1b05120f509fabd95c6d93d02308a3a0
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating an attempt to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=cedulas+de+identidad+ecuador+pdf', which is flagged as a malicious redirector. This suggests the file is designed to trick users into downloading potentially harmful content.

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=cedulas+de+identidad+ecuador+pdf In PDF document text
    • http://wedokaw.wilsonramband.com/uploads/1/3/2/3/132303374/kerodotiteliv.pdfIn PDF document text
    • http://files.ostler-moves.com/uploads/1/3/1/8/131871730/minor_xanemegivepele_mokiginagit.pdfIn PDF document text
    • http://files.backcourtballers.com/uploads/1/3/1/3/131379320/dozoxijorizum.pdfIn PDF document text
    • http://sogaror.uilmusicregion11.com/uploads/1/3/0/7/130740178/4320fb5899.pdfIn PDF document text
    • http://ribug.ipsma.info/uploads/1/3/0/8/130874276/6292748.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/1/0433/4233/2057/files/pdf_bookmark_maker_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/85612171154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0951/files/14900697996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/wolf_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/1605571216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/4853100542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1116/1768/files/31269454302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/varizedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/rukodutijez.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
stream_006_off000153bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x153BD 16640 bytes
SHA-256: c758a40925583d9d5ea92598d291f737a0538ce6bdb47e2cfe439d323ec7b60e
font_00_sfnt_off00011a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A80 5052 bytes
SHA-256: ae310aefccfc98b1a1757444c383d198361299a7856f06c0fb69049155dcfbe0
font_01_sfnt_off00012bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB6 12184 bytes
SHA-256: 6ed2717e26f8270b49ab46a76805973b86e72f5bf6b83e14244db660bfface1d

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