Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5feb4fc8fe9efb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 06:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89533bea8fa040e68fcd268b8b2de3df SHA-1: ba4612b8b797e952f8c0f72a271fc6209d5df9a7 SHA-256: dc5feb4fc8fe9efb6142e9eda32241908c442b35847e965b2e3feacf52ee8c87
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The primary malicious URL is https://ttraff.cc/wb?keyword=guerin%20sportivo%20giugno%202019%20pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting further analysis of the execution chain.

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/wb?keyword=guerin%20sportivo%20giugno%202019%20pdf In PDF document text
    • http://files.undertheirrelevance.com/uploads/1/3/0/7/130740458/gexizazunudepo.pdfIn PDF document text
    • http://files.shopthirdculturebakery.com/uploads/1/3/2/6/132682048/deziku.pdfIn PDF document text
    • http://files.partneringforsafety.com/uploads/1/3/1/1/131164160/5136947.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/1/0429/2699/7663/files/14347803441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/13381334602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/wojologoxawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/kesuxifodofekegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/pazalekerotisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/punjabi_alphabet_tracing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/84974356469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/goduvafozemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/broad_and_narrow_spectrum_antibiotics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/89737263009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/nanije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/repukixipupawelirizezoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/tamukotozufajewepisefab.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 5540 bytes
SHA-256: 320cb06d9fda568074653b4c850156a0fb113ae5091cbcdbf245fd4598dd5d19
font_01_sfnt_off000076db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 11812 bytes
SHA-256: 218c688c14f33b5f4bedd3313084d6421fb136f67efd5ace22d502c67076503e

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