Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12d3dc3acbf75e1…

MALICIOUS

PDF

39.8 KB Created: 2020-08-25 09:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7ccc1e15a6bf37f6a931e19e85ab3af SHA-1: 24bc64169c921e0c0d5c0f69d2266fdf491789b3 SHA-256: b12d3dc3acbf75e1d7a4f626cb0b99888c9e1a20303f089861b7525fcc69df15
194 Risk Score

Malware Insights

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

This PDF document is designed as a link farm, embedding numerous URLs that point to other PDF files. One of these URLs, https://ttraff.ru/pify?keyword=happy+birthday+piano+tune, is identified as a malicious redirector. The document's structure and the presence of the malicious redirector suggest an attempt to lure users to malicious content or to engage in SEO manipulation for malicious purposes. No scripts were extracted, limiting the analysis of direct payload execution.

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=happy+birthday+piano+tune In PDF document text
    • http://files.thebeautyteam.com/uploads/1/3/1/6/131606789/b200f.pdfIn PDF document text
    • http://golek.postsustainabilityinstitute.org/uploads/1/3/1/3/131383613/6841279.pdfIn PDF document text
    • http://petivimit.childemotionregulationlab.org/uploads/1/3/0/7/130775565/gasepavurilum.pdfIn PDF document text
    • http://madekume.saharness.com/uploads/1/3/0/9/130969265/04d740d.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/1/0431/7455/9893/files/fulaturalugetupojiraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/93449548861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/20510878793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2702/7352/files/untied_alma_aridatha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/98636726010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2007/2613/files/nukegofaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7532/9445/files/bibliography_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/mawikowiguxako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6278/9024/files/54163432843.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 8

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_off00005ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC5 5040 bytes
SHA-256: 8eab9bb1bde42e03c597cdc1d2708b6c1983936944988e5586b88bd6bae308ba
font_01_sfnt_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 10088 bytes
SHA-256: d50eaa9256071dd3b3eaea6db81bbbf645396d46e8ddffab1c2e59782d8dd090

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