Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8776434abacde61…

MALICIOUS

PDF

44.3 KB Created: 2020-08-08 01:55:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81ae556c1ebb4642ae5b14f80f5a5b97 SHA-1: 338aca68d0bdd2a4f20d5b08edc649ac7a3020ef SHA-256: c8776434abacde61283243c6a3c6db8bf35590a5525e7f3edbaa436605eeb526
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'bodybuilding poses pdf'. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to malicious content, likely for further exploitation or phishing. 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=bodybuilding+poses+pdf In PDF document text
    • http://files.sankofachiropracticcare.com/uploads/1/3/0/7/130776786/vozov_xumimojore_geloketazutol_sudesakison.pdfIn PDF document text
    • http://files.lorindaforrest.com/uploads/1/3/1/6/131637178/2070375.pdfIn PDF document text
    • http://safija.cityskyflooring.com/uploads/1/3/0/9/130969060/bafegodopevufuvime.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/1/0428/0342/9535/files/falirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/10165944153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0382/7608/files/29893274659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/33255411465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/68224382843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/litofumivosexipedagig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/sejagoxikukevotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2639/8888/files/74968142051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/girozezolatazobizen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5026/1915/files/define_language_acquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/6461781827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/bumoteperemuj.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
🗂 Part of campaign: kingstreetbeer.ca 5 samples

Related samples 2

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_off00006ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE7 5196 bytes
SHA-256: e07794c430d788ee1084fc7cd43a4836396442b5c2b0fc3221126c97311cb3e3
font_01_sfnt_off000080b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B6 10448 bytes
SHA-256: 873a671d668ff63897c802210cd2ce726c2cf37faec0bbed6a6accd1485d4e67

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