Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb335aa4ef6c0a3…

MALICIOUS

PDF

54.9 KB Created: 2020-08-20 23:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20188caf8c99c60b690f2cb8480c68b0 SHA-1: 6e739e3d6ec0c74f598475106a34a916b19b83a6 SHA-256: 6fb335aa4ef6c0a3fd40cf305bf9517a80d680d12261089c8c8f24e13071674a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to appear as legitimate downloads, but the primary link redirects to a known malicious redirector. This indicates a phishing or scam attempt, likely to deliver a secondary payload or lead the user to a credential harvesting page. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=sap+fiori+launchpad+plugin+template In PDF document text
    • http://files.regulatorycheckbook.org/uploads/1/3/1/4/131453536/fikunugutumowi_fenazaxuwanezuj.pdfIn PDF document text
    • http://dapukon.macroleaders.com.au/uploads/1/3/2/8/132814930/3987192a4cb13b8.pdfIn PDF document text
    • http://namegeju.forgemd.com/uploads/1/3/0/7/130776394/wokipebowis.pdfIn PDF document text
    • http://files.wren-project.com/uploads/1/3/1/4/131407547/nexufemel.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/1/0436/3590/0569/files/44959188102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/40575679329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/backwards_and_forwards_david_ball_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/sotifufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/91979369697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/4504426880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/novuribav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/bsg_coeliac_guidelines_2014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/64815116614.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 8

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_off00007d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D84 5376 bytes
SHA-256: 6799e2458c621c31508b79a0ad06418604a2d508347b69fea16007649e4b03fb
font_01_sfnt_off00008f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8C 15684 bytes
SHA-256: 8921851a4226a42c9b38178b47cd21746edcac79e514ec03108bf1d72831b164
font_02_sfnt_off0000c0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0AD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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