Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ad783eb47f2b01…

MALICIOUS

PDF

76.1 KB Created: 2020-08-22 07:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e17af3af35efa50559a658723172799c SHA-1: 36f15c0a9d73b5508ed510ffbd1685dd10450b91 SHA-256: 39ad783eb47f2b01a3d4c22ebd6daf4f929cd9e4c767e955fb7047edfb48d454
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious payload. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=advanced+sql+queries+examples+with+answers+pdf In PDF document text
    • http://files.you2masterclass.com/uploads/1/3/1/4/131453028/vifuretijigat.pdfIn PDF document text
    • http://files.mytechiebuddy.com/uploads/1/3/1/4/131454151/daxijibuvoza-xofipe-sabujetisafud.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/1/0450/8683/4851/files/berarakawuzokenalaporarik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/wiliremamor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/exercices_corrigs_sur_les_amplificateurs_oprationnels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/75387126752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/dokusofejub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/xefoguverarosivuvipepuzel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/kaveguzidifom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/pijadafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/diwetakulojuralazipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/11697050051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/62793234012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1758/4285/files/84883106497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/12_body_systems_and_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6288/5541/files/govugavakofevodu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE4 5732 bytes
SHA-256: 31deee93bb5c29e61cf78951254cc282f2b9b0c5be1d0a4ee9b2763af7f9eb4d
font_01_sfnt_off0000f04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04D 16320 bytes
SHA-256: 873407b97960b2d462a91831f69f5b210a20caed408765b0ea21239f1819dbf7

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