Malicious PDF — malware analysis report

Static analysis result for SHA-256 534d85f9913fc6a1…

MALICIOUS

PDF

40.2 KB Created: 2020-08-19 20:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcd17f32da359f4d348562de9a67cb8b SHA-1: 6a3ef28ba8955d8bb39d3642eefb929d3de7d315 SHA-256: 534d85f9913fc6a14c67f150e9cdbb428bd81cff6239b0f041baad524adbe021
194 Risk Score

Malware Insights

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

The PDF contains a lure to 'Unblock caller id on android phone' and embeds a link to a known malicious redirector. The PDF also contains a large number of links to external PDFs hosted on Shopify, suggesting a link farm for SEO manipulation to distribute malicious content. The ML classifier strongly indicated maliciousness.

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/pify?keyword=unblock+caller+id+on+android+phone In PDF document text
    • http://files.myinfoviews.com/uploads/1/3/2/7/132712508/tinadazilogutoxinif.pdfIn PDF document text
    • http://files.preciouspurebredpupz.com/uploads/1/3/2/6/132696104/xudefumiw_vuxonelufisogep.pdfIn PDF document text
    • http://files.uhaczphotographyllc.com/uploads/1/3/1/0/131070009/keboxudowip-kilugapab.pdfIn PDF document text
    • http://gupos.lifetimenutritionllc.com/uploads/1/3/2/6/132682883/bovizo.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/1/0430/8061/4041/files/pagulapaporajepaged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/59163721060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/3ds_max_camera_animation_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/vukeniboviriparojitenir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8537/3333/files/mahesh_bhatt_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/puntos_de_partida_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/nozifemejusefanuwutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1299/files/magugepezagijijiwuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/19321717545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2477/5330/files/dowofifexenut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/xufegipedumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/gojisuruba.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 2

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_off00005f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F06 5176 bytes
SHA-256: 67e3e4b9cca8deb9a58c1ae3c77c0776e16e6d58b04158c43cd353a72a979b0a
font_01_sfnt_off00007089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7089 10376 bytes
SHA-256: 801e06b54e59a63ed2d0571e2e63398ea0cc9f0357396b0ccd90137ed25bb27f

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