Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e5da8df91f2d8f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 17:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f82e7f2397edc3e1ae443f8966a2d4a SHA-1: f5706eaa9aac797e9b687c43d25a148ed89437f3 SHA-256: f8e5da8df91f2d8f46ae3265e5f6a184f6bae3cc9c68ee93ebae339e54e55cbc
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text referencing 'ccleaner for macbook pro' and the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The PDF structure and link farm indicate an attempt to manipulate search engine results or distribute malicious content through deceptive links.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=ccleaner++for+macbook+pro In PDF document text
    • http://files.fast-coin.org/uploads/1/3/1/0/131070485/zovawizuruvokoxotog.pdfIn PDF document text
    • http://files.internationalradioartresearchgroup.org/uploads/1/3/0/8/130874328/21bac1.pdfIn PDF document text
    • http://files.geoffalainllc.com/uploads/1/3/1/6/131606027/zewurizafimivimosi.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/1/0430/4040/7701/files/60th_birthday_invitation_template_male.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/software_architecture_design_illuminated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/zudemolevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/kugusowokilazepigija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/corsair_void_pro_wireless_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/nimoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/66439036177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/mepofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/fulawivabozat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7725/2760/files/inventory_aging_report_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.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 6

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_off00006322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 5092 bytes
SHA-256: c21e7d575e54a55b2c041b542cf0b97ed708583e3ea73794eedaafe1003eb958
font_01_sfnt_off00007455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7455 9840 bytes
SHA-256: 4b39e3f62e91f5d02a38c0b6bb097a5df49373947dd8f284e0e98af32bdf1052

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