Malicious PDF — malware analysis report

Static analysis result for SHA-256 7547f8eb2b9cf6f8…

MALICIOUS

PDF

33.3 KB Created: 2020-07-29 17:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8083f84f90c304a96db47ac369d7ff31 SHA-1: b647eca112af08d549ab8b26eb97ee8556caf7d6 SHA-256: 7547f8eb2b9cf6f8cd85ceed87ae7bfa4eab0df3739e2b14cf3852edb7f07600
214 Risk Score

Malware Insights

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

This PDF is designed as an image-based lure, masquerading as a document about '1001 algebra problems'. It contains a high number of external links, many of which point to Shopify-hosted PDFs, forming a link farm. The primary redirector URL, https://ttraff.ru/pify?keyword=1001+algebra+problems+pdf, is flagged as malicious and likely serves to funnel victims to further malicious content or phishing sites.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 33 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.ru/pify?keyword=1001+algebra+problems+pdf In PDF document text
    • http://files.bombaybazaar.com/uploads/1/3/1/3/131383838/misekugipomovok.pdfIn PDF document text
    • http://files.thesouthernmedium.com/uploads/1/3/0/7/130775108/vojadawite_wudisobufor.pdfIn PDF document text
    • http://files.siceyourlife.com/uploads/1/3/2/7/132712508/1decdb041c0c.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/1/0428/2531/8563/files/tugob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7659/1509/files/jetozirosezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2742/9536/files/magavun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/33024617392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6527/7605/files/fufawubibufoduvidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/xabomogozazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3067/4597/files/dorokifadejiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/70111433934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/leripova.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_off00004bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF8 5156 bytes
SHA-256: 54f2c927a32f6fffeab054b9035b5d8e39d47ebab7642c93509686c0c5b9cc99
font_01_sfnt_off00005d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D66 7968 bytes
SHA-256: 9fe01cfe3f2c9d35571218e35e704ef12233199d7af674625bca61c44b617f3b

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