Malicious PDF — malware analysis report

Static analysis result for SHA-256 225f16ad3d118380…

MALICIOUS

PDF

47.4 KB Created: 2020-08-04 08:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 811b5df8ccf71c902ebd66b8cc9f40a9 SHA-1: 30d2c21c06a10c460dfa2fcc3b7e16052d7aab3e SHA-256: 225f16ad3d1183808915f42069a4665a92ee6ca68773e74a7e81fb77554977df
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=binary+tree+in+c+pdf'. This URL is presented within the document body, disguised as a search result. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely intended to improve search engine ranking for the malicious redirector. The 'SE_INVOICE_LURE' heuristic suggests a pretext for the user to interact with the document, likely by clicking the malicious link.

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=binary+tree+in+c+pdf In PDF document text
    • http://files.thomsondentallaboratory.com/uploads/1/3/0/7/130775528/maremofisuwagol.pdfIn PDF document text
    • http://binoto.truelighthealingcenter.com/uploads/1/3/0/7/130775612/571843.pdfIn PDF document text
    • http://files.uniquecelebrationspartiesandgifts.com/uploads/1/3/1/3/131379312/redafomudabuj.pdfIn PDF document text
    • http://files.davidleakeesq.com/uploads/1/3/2/6/132681670/zurifif-besusuxuravix.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/1/0434/7379/7285/files/43390759225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/39955642689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/best_reader_windows_7_ultimate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/62099473200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/falajunelemulogomid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/77025314381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/79902087890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/62467334291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/4675773907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/init_git_repository.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9809/5262/files/96388850950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/debigemifiragu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4112/0679/files/34457051096.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_off0000787a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787A 5088 bytes
SHA-256: f25bec1984f81b40db48e77a72b04c437b12fed56766fea597d93438b0cd806d
font_01_sfnt_off000089e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 11328 bytes
SHA-256: 87416b9fb2b3267c450c1e23e961ec9d55c18703b5216dfa8ff840f83591c81e

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