Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed921750d876ef1…

MALICIOUS

PDF

37.3 KB Created: 2020-08-20 20:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2ce256c2fde861325a744c71d226a96 SHA-1: 609b64f4b0352b38eb72e9c1b9d6a6f7fa8d1824 SHA-256: aed921750d876ef13012db97c6ba0c30515e381db5e9683ddf2fcb805e21ba1b
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 disguised as an annual report. The document also exhibits characteristics of a link farm, with numerous embedded links to other PDF files, likely for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious verdict.

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=hansol+technics+annual+report In PDF document text
    • http://files.jcaweb.net/uploads/1/3/0/7/130776611/3ea9e956717a7.pdfIn PDF document text
    • http://vufufole.tightenyourboots.net/uploads/1/3/1/4/131409090/8377799.pdfIn PDF document text
    • http://romifetop.mouselab.org/uploads/1/3/0/8/130874601/7708976.pdfIn PDF document text
    • http://files.my-digital-dude.com/uploads/1/3/2/6/132695200/guforajojimuvog.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/1/0432/5769/2315/files/hernia_hiatal_sintomas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/asciidoctor_maven_central.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9611/9198/files/automobile_companies_in_chennai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/92298324869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/vabukenexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4683/6123/files/59852791325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/handbook_of_virtue_ethics_in_business_and_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/aluminum_sheet_metal_thickness_metric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3310/0439/files/bopexofakokigoliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55497749658.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 4

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_off000052a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A5 4980 bytes
SHA-256: 3032e3743cdec9629b21468546498b9aa396f3a4ba1f92b52df6788739e085e1
font_01_sfnt_off00006387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6387 10944 bytes
SHA-256: 2630d8c0943a76fdb7b6338864b22d257cbdf186931265d80bc739148c78c1eb

Open this report in the interactive analyzer, or submit your own file for analysis.