Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f18b25383e5a485…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 11:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bb364532602d285669efdfc58c2b3df SHA-1: e548dd6837453ac72dedbe8a4bcdcd9855aac013 SHA-256: 5f18b25383e5a4852ed6a1a16dd16f0c46f807f5eac5fdfe8c30ee69a13de0c2
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector infrastructure, suggesting a phishing or scam attempt. The document body and heuristics indicate a lure related to order confirmations or invoices, designed to trick users into clicking malicious links. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=order+confirmation+template+bootstrap In PDF document text
    • http://files.realestatesystemsofgillette.com/uploads/1/3/0/7/130775672/7488231.pdfIn PDF document text
    • http://zisisena.alexbaltodano.com/uploads/1/3/1/4/131483281/bonumulu.pdfIn PDF document text
    • http://tawinar.homechekcnp.net/uploads/1/3/1/8/131857631/5724747.pdfIn PDF document text
    • https://bbbootstrap.com/snippets/embed/order-confirmation-email-template-19073214-name/BBBootstrapIn 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/1/0435/5470/1461/files/8657153670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/65798435257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/viradupabotezeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/rupatopezotegow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/tafiziloririzufekipifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/fast_cavitation_slimming_system_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/dugovaxurinumevozet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/18528534801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1556/1638/files/mozajuravabegibedoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4868/9050/files/ruwotodememegurawixosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/82100606956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/fleet_vehicle_inspection_checklist.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6151 5468 bytes
SHA-256: a5eae7a3f094e04eb56e15c396e16c8c6b64c3c97a010ee914567c63fbfa49c8
font_01_sfnt_off000073c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C6 13324 bytes
SHA-256: 8b8960ff7e9b29d32ccd49ce2d243da652b3192a3d80ea45c606ea0c5aa9e9a8