Malicious PDF — malware analysis report

Static analysis result for SHA-256 528e583c2087b0dd…

MALICIOUS

PDF

41.5 KB Created: 2020-08-04 20:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec74d10bcf7e4f111e6140d3f126642 SHA-1: 758823846ad658b312d4bf6f9d18ee138c60ca28 SHA-256: 528e583c2087b0dd152514a7678987a8afc5d1d3691d39c6fe99be75ca76c095
202 Risk Score

Malware Insights

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

The PDF contains a deceptive call-to-action related to 'watermark remover from pdf free', which is a lure to trick users into clicking a link. This link redirects to `ttraff.com`, known malicious redirector infrastructure. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the ultimate destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=watermark+remover+from+pdf+free In PDF document text
    • http://files.certraxapp.com/uploads/1/3/0/7/130776673/kiwuselijilosopojo.pdfIn PDF document text
    • http://files.behealthygroup.com.au/uploads/1/3/1/6/131637763/nenawuzovemo.pdfIn PDF document text
    • http://files.lindenweitz.com/uploads/1/3/1/3/131383493/lolumigex.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/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/53229957639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/dakepagizelojor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/naduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/noxamomisoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0843/4077/files/pawixiwoses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/94543133396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/7347810083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/titimumim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/mukesapese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/journal_impact_factor_ranking_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/juxagarozuzenetezokaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/tinkers_construct_weapon_modifiers.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_off00006548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 5116 bytes
SHA-256: dcb84f3a9a3170f562419b870e49a75e33dd95a3fd7f793cc95f82b799905389
font_01_sfnt_off000076b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B0 10060 bytes
SHA-256: 31cff39631374690dd0bd8130973665e8d2e0942ad53289479df573da06e4d34

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