Malicious PDF — malware analysis report

Static analysis result for SHA-256 7998ffc079853c97…

MALICIOUS

PDF

57.7 KB Created: 2020-07-29 11:04:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd02142159980fc9e6672e949b06179f SHA-1: ee5ae42eafa354318e78292257e2a08e445b89c3 SHA-256: 7998ffc079853c97129dee9c4978f4c83ce59917ffb9ce705870a4ee5aad9055
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=water+aerobics+exercises+for+seniors+pdf`, which is flagged as malicious. This indicates a likely SEO spam or phishing campaign aiming to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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=water+aerobics+exercises+for+seniors+pdf In PDF document text
    • http://files.lonelydoggallery.com/uploads/1/3/0/9/130969710/431636b5.pdfIn PDF document text
    • http://files.nvmedia.org/uploads/1/3/0/8/130874361/5451535.pdfIn PDF document text
    • http://files.katiechavarinphotography.com/uploads/1/3/1/3/131379496/6656517.pdfIn PDF document text
    • http://files.stellarcarevacations.com/uploads/1/3/0/8/130874588/3fb0a9.pdfIn PDF document text
    • http://files.royalesd.com/uploads/1/3/0/9/130969494/bafunoxovoxuwan.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/1/0434/5180/9957/files/73550942044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8486/4917/files/sokovomubekovalisepol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/fefudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/59656252384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/79056374723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/bedapat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6790/6977/files/mesabezobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/tigagiwademu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/12098213052.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 6

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_off0000a4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AF 5124 bytes
SHA-256: ace54a0024e395b6f68eb091c33e244b4bd079f765a8e18a7fafeca937ff3357
font_01_sfnt_off0000b62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB62B 10292 bytes
SHA-256: 4abd74e14e8a45e75cd98b679bece9f233f6cdfd1f085d64fca6962c1285ec84

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