Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5975e797f1a2dc2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 09:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0f9248979ca0576256ff4f90edaa521 SHA-1: 5c92e9a2f6232b0dd1cd7906c8923dfa3b03fbaa SHA-256: a5975e797f1a2dc24e758210072456024b6a7e2e1104a15c6960808bdae11283
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=brother+sewing+machine+se400+manual', which is identified as a malicious redirector. This suggests the document is part of a phishing or SEO spam campaign designed to lead users to malicious 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=brother+sewing+machine+se400+manual In PDF document text
    • http://files.allspacesllc.com/uploads/1/3/2/8/132814990/797d0b48852e8b5.pdfIn PDF document text
    • http://files.viewsonbrews.com/uploads/1/3/1/0/131070845/f3ad77b20.pdfIn PDF document text
    • http://files.madisonbizreview.com/uploads/1/3/2/6/132696029/5809701.pdfIn PDF document text
    • http://files.lilysparkles.co.uk/uploads/1/3/0/8/130874370/lulubuveganan.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/1/0429/9846/4661/files/68404329996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/mastering_physics_chapter_3_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/st_louis_blues_tenor_sax_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6889/0782/files/microsoft_powerpoint_slide_design_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/busunobadikifegane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/biwakobexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4737/8344/files/reporting_binomial_test_apa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/fizelit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/35372290871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/as_nzs_3000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8839/3893/files/61038167000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7752/3873/files/velufiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/9663433917.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_off000061e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 5584 bytes
SHA-256: d061389cf8bce471bac6675dfdc48ac559c2f37f40ee38357d9dd68766152a02
font_01_sfnt_off000074ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 10424 bytes
SHA-256: 5ceb9373edd3dbf019d833a440858fa7773acf0e757141f1f0ad33f02438dc64

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