Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03aa9125e17f9fc…

MALICIOUS

PDF

60.9 KB Created: 2020-08-25 02:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8eb437ee436d15a3100f148b7951f7e0 SHA-1: 0725443a78e561752f5334b2a54dd68d9f11a69b SHA-256: a03aa9125e17f9fcec4aff417202d439f53a9730093471b94d67701f2e72a8b8
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains the same URL and keywords related to a popular song and game, suggesting a lure. The presence of multiple links to external PDFs hosted on various domains indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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=crab+rave+roblox+piano+sheet In PDF document text
    • http://files.adventistedenslanding.com/uploads/1/3/1/6/131636914/3047685.pdfIn PDF document text
    • http://files.aukidesigns.com/uploads/1/3/2/7/132712088/fapuvu.pdfIn PDF document text
    • http://files.beaconcoachingandtraining.com/uploads/1/3/0/9/130969424/lepeba.pdfIn PDF document text
    • http://files.spotlightct.org/uploads/1/3/2/6/132681992/9896649.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/1/0434/8562/6520/files/amma_bhagavan_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/mowagemanefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4384/0412/files/bronkitis_pdpi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/cells_and_tissues_chapter_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/electronics_and_communication_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/ejercicios_con_adverbios_de_frecuencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5261/1222/files/pluralisme_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9017/3333/files/widusasezivizigimulagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/51278650043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/calculation_formula_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/ardhanareeswara_stotram_in_telugu_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2798/3510/files/the_alabaster_girl_file.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_off00009b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B58 5080 bytes
SHA-256: 478bf552bb58932f4e42198c45726b5bcbf7491261fe79eb3141529204f365f4
font_01_sfnt_off0000ac99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC99 18044 bytes
SHA-256: c21562310a2a0a26f7171a8aad8ace780f6b03a0fe492a7e573eca54042958ac

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