Malicious PDF — malware analysis report

Static analysis result for SHA-256 6505d231ede0ca2a…

MALICIOUS

PDF

39.5 KB Created: 2020-07-23 06:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8019ca6eb10f2b151f394cb9c22c7e7e SHA-1: 166634250d5425c0a6fa79c25f7a5f03c27ee98b SHA-256: 6505d231ede0ca2a1d790391333b7e50e9ae9675f05de55c50bf4341de8d2c96
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Ave Maria Bach Gounod pdf'. The presence of a link farm and redirector indicates an attempt to drive traffic to potentially malicious sites, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.cc/pify?keyword=ave+maria+bach+gounod+pdf In PDF document text
    • http://files.matthewkushi.com/uploads/1/3/0/7/130775331/8584888.pdfIn PDF document text
    • http://files.juliaschombergart.com/uploads/1/3/1/6/131606815/gigamulavezosexoma.pdfIn PDF document text
    • http://files.ltartsdesign.com/uploads/1/3/2/3/132303269/rugesaxajuku_mupifirod_zuviteboxubiv.pdfIn PDF document text
    • http://files.hoxton253.com/uploads/1/3/0/9/130969185/woretugiraw_jafulas_xabomokef.pdfIn PDF document text
    • http://files.alexinahicks.com/uploads/1/3/2/6/132695298/4878806.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/1/0432/5857/7046/files/78633740144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/36232981214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://muzovav.files.wordpress.com/2020/07/24265776135.pdfIn PDF document text
    • https://zaferogo.files.wordpress.com/2020/06/31066938901.pdfIn PDF document text
    • https://nirumepuna.files.wordpress.com/2020/06/risijawaviluzipizafa.pdfIn PDF document text
    • https://juwulokoku892427888.files.wordpress.com/2020/06/bekiwomutewixekupoxuzut.pdfIn PDF document text
    • https://murivurol.files.wordpress.com/2020/07/8391175606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6337/8081/files/35273254584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/pogafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/mazeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/22281873913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/xogufoxaxosuwarasoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/90399689283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/kisabekarudijunirufazorox.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 5348 bytes
SHA-256: 167f06e568c8653401db2378bb8b677ceb0bae67d88935c0d186b1094a6f5264
font_01_sfnt_off00006ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA5 9988 bytes
SHA-256: 48a11e8672492979ea4640975c57ffca9a5166f129018542de31914750edcdc7