Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ffdc96d75523d5…

MALICIOUS

PDF

37.7 KB Created: 2020-08-06 21:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8addd676ccd775d7736bbf3b07346e07 SHA-1: 6c263a066a94ce9f256eaa8caf2c3f98c85f2e94 SHA-256: a2ffdc96d75523d59499fb52ab9d143f55f9deff1333ff4619c1e4f405ea4888
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, constituting a link farm. One of these links, 'https://ttraff.ru/pify?keyword=watermark+pdf+online+tool', is identified as a malicious redirector. The document body and metadata suggest it is designed to lure users into clicking these links under the guise of a PDF watermarking tool.

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=watermark+pdf+online+tool In PDF document text
    • http://files.alittletheologyontheprairie.com/uploads/1/3/1/4/131437446/f41a0b2a4.pdfIn PDF document text
    • http://ripowibir.officeformations.com/uploads/1/3/0/7/130776262/pikegonajekini-fejasesopawo-xekamifivewiso-tujofozoko.pdfIn PDF document text
    • http://files.elshaddaiswazi.org/uploads/1/3/0/8/130874431/mopulujigikuz_keriwazuvitox_benikanuvilof.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/1/0429/6183/0037/files/jijifinozamewopigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/catalina_island_fishing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9983/0939/files/gapegawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4347/1003/files/88412621267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/55130689531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7130/files/260397326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/94006273738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/panelimovoxamojipek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/76482933942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/pufifudepuxiramume.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 3

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_off00005555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5555 5088 bytes
SHA-256: 8e8e700d7f81897d39a0cc929541f741edcd781ff00ca08a90d5dfc97d32aeb5
font_01_sfnt_off000066a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A3 10496 bytes
SHA-256: a0e7d8f6e2b57180855d40621c8572caa17c988793a48e02f60a9bea1685e02b

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