Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2815d86db8be368…

MALICIOUS

PDF

47.1 KB Created: 2020-08-24 06:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b15acd5ccbfcfabd8ed16fcccae30409 SHA-1: 9f17af1ca965f3336559ff27d02adea0cda02541 SHA-256: b2815d86db8be3684306661bbfaeb8657f3782140b815ee605bc85197d095c4b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This indicates the document is designed to lure users into clicking malicious links, likely leading to further compromise. The ML classifier also strongly flagged this PDF as malicious.

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=diferen%25C3%25A7a+entre+umbanda+e+candombl%25C3%25A9+pdf In PDF document text
    • http://files.catherineodriscoll.com/uploads/1/3/2/7/132741334/aff7707c5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/38165173855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/fikasiledukuxevokewesami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/73707922193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/30676682096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/klaudikasio_arteri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/deficiencia_de_vitamina_a_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/85717759463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3625/9990/files/d_d_3._5_complete_scoundrel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/jovelezivewexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/gente_toxica_libro_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6113/3720/files/5749917827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/jigirajirop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/anti_ragging_form_polytechnic.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 5468 bytes
SHA-256: 6a455dcaa228ac1341fb5d213ae0767293498afa51d5ef8cf31231210d8ca6a6
font_01_sfnt_off00007805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 12960 bytes
SHA-256: 72256b2f5a878952c80e08b82ddf0b4e63044877457e973cf6da5c0aacf7b015
font_02_sfnt_off00009f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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