Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bd9b7edf5120e4…

MALICIOUS

PDF

48.9 KB Created: 2020-08-08 06:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d94a4a8d9ce2efb007c5b5be82cc2fdd SHA-1: 3cb8d9582b2c7f6f82c17d189df44db83860abf8 SHA-256: 15bd9b7edf5120e4e86860a5543f4044c3378f1b7841a456f7abaad99ed3714f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service designed to host a link farm. The primary redirector URL is `https://ttraff.ru/pify?keyword=bassoon+orchestral+excerpts+pdf`, which is flagged as malicious. This suggests a phishing or scam attempt where the document is used to drive traffic to malicious or deceptive websites.

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=bassoon+orchestral+excerpts+pdf In PDF document text
    • http://files.jltconstructionmt.com/uploads/1/3/1/3/131383771/lupawixupavoxolamij.pdfIn PDF document text
    • http://files.goodtimesgv.com/uploads/1/3/1/1/131164386/ziwav.pdfIn PDF document text
    • http://files.clintonvolnerphotography.com/uploads/1/3/0/8/130813366/4c0ebcac9.pdfIn PDF document text
    • http://files.lyricallyjustified.co.uk/uploads/1/3/1/3/131381881/lobimitetawuwo-repixa-zuzave.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/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/learning_styles_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/24946639261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/rasumolasovim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54980903056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/20939483847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/naridutalewoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/16887194426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/body_systems_and_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5413/6473/files/tratamiento_del_cancer_de_cuello_uterino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/94005388387.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 5

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_off0000799b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799B 5360 bytes
SHA-256: d8420db10896af118e4eccb15073cab8ff357316785ccb1edcdca8003bc21cc8
font_01_sfnt_off00008bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD7 13240 bytes
SHA-256: 96d2a0d15c43c11e5a9c9e497dbab5719dba3652c81e11589846144aea096b31

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