Malicious PDF — malware analysis report

Static analysis result for SHA-256 12b51ef5901b8492…

MALICIOUS

PDF

43.9 KB Created: 2020-08-25 10:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17a5570ce526c14700e38bbce747885d SHA-1: f0d849a986f26d6bd2300f8483427b3d548c7ed6 SHA-256: 12b51ef5901b84923bf5059f6bf05e70e845867452b17e80537581c30252eadc
202 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which is flagged as malicious. The document body and heuristics suggest a lure related to payment or invoices, aiming to trick the user into clicking the malicious link. The presence of numerous links, many pointing to benign Shopify URLs, suggests a link farm or SEO manipulation tactic to disguise the malicious redirector.

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.com/pify?keyword=payment+checkout+page+template In PDF document text
    • http://vidosusu.3lennons.com/uploads/1/3/2/6/132681579/7500284.pdfIn PDF document text
    • http://files.wendybusch.net/uploads/1/3/0/8/130813841/0e905d219bd.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/1/0428/5209/0022/files/pharmacy_requisition_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/93492418835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8579/1393/files/9114462886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1710/7618/files/final_countdown_1st_trumpet_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/liberalization_privatization_and_globalization_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/liwojovodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7508/3169/files/7213236240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/pozomexenijedadepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/lepadan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/75589510851.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 4

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_off00006ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 5240 bytes
SHA-256: dda212c8ca8186238f22f639b9ed29649552558d2e4e9a1187ba5b079edb052d
font_01_sfnt_off00007d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4F 11116 bytes
SHA-256: 0cfd6201fab4ff486b0cce3e27927fcf33eebad9bad271b666035f943617a4de

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