Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf8ff89e7208efa7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 11:32:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 859a37d3a5eaf3760933fcc16ff94087 SHA-1: 7f2115aade7d04ac4eb690238c2a57d609f7db4d SHA-256: cf8ff89e7208efa790ee75f215fff84d251e78d1552127f1f22711e5f79496d7
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to external sites, with one prominent URL identified as a malicious redirector. The document body, though partially corrupted, includes the text 'How to make a webhook discord' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to potentially improve search engine ranking or distribute payloads.

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.ru/pify?keyword=how+to+make+a+webhook+discord In PDF document text
    • http://files.ktharrington.com/uploads/1/3/2/7/132712006/4914242.pdfIn PDF document text
    • http://files.deparel.eu/uploads/1/3/1/4/131437984/c228d956e.pdfIn PDF document text
    • http://files.barbarafoxartstudio.com/uploads/1/3/0/8/130814735/beweburukep.pdfIn PDF document text
    • http://files.leonschainsawpartsandrepair.com/uploads/1/3/2/6/132696558/fc1355ae9111.pdfIn PDF document text
    • http://files.sakuramassagesantafe.com/uploads/1/3/0/7/130738722/sirowup.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/1/0432/7335/5419/files/lurapeteluwugajusogulixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/zopetifuwes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/12769782446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/tikowolidefebizimogirun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/nekeluzev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/movobefaziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/23083780136.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 5084 bytes
SHA-256: 48d5c3df4e8c6880c2066f2467a7c1f6ba2e2be901b7d297bafa1d927bcad37f
font_01_sfnt_off0000727b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727B 10556 bytes
SHA-256: c65cd22f3d97cf774025971d86706727b254165034c07270f477ebd0dcec368c
font_02_sfnt_off00009695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9695 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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