Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a61059b668b1c16…

MALICIOUS

PDF

41.9 KB Created: 2020-08-15 21:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0b49ea65dde11b4b3ee278b20318baf SHA-1: 45471c4fb5925bd1b4918b2378d6415b83e83fbf SHA-256: 7a61059b668b1c161b16cae62d2f9f095fd25fc880f0a6e88eaf20972e11fe7e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one that redirects to a malicious domain (ttraff.com) disguised as a research proposal. This indicates a phishing or redirection attempt to a potentially harmful site. The ML classifier strongly supports the malicious verdict.

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.com/wb?keyword=research%20proposal%20on%20waste%20management%20pdf In PDF document text
    • http://files.franciscanfoundation.org/uploads/1/3/1/8/131857419/jopin_gesur_pafofuzevu_majezevewo.pdfIn PDF document text
    • http://wowezok.frhsbands.org/uploads/1/3/0/8/130814328/gevekix-suxegiba-tavasobonetoser-suraludiz.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/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/manualidades_de_papel_periodico_mojado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/82582388003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6464/6037/files/pijoxasawogeratit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2288/3735/files/classroom_management_in_english_language_teaching.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/lutoveza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/github_how_to_create_a_branch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/3032013352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/formula_tab_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/63773669452.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 7

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_off00006597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6597 5668 bytes
SHA-256: 9f8c7fed3c97d073e8a19cc85bf35f7a4225a36bdba48fd8800fae7b3fa6faae
font_01_sfnt_off000078c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C0 9992 bytes
SHA-256: 2a3eae922a66d9483b6da85f42851fdb82c2459f8acd87cfeffb9eb2e773c06f

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