Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91b37d791204535…

MALICIOUS

PDF

42.4 KB Created: 2020-08-17 11:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5dd6a3fc2246a87c4fe95cddb6774e24 SHA-1: 61be848adbb0dfe57776bc7d6ae8d172bd2f9ea8 SHA-256: d91b37d7912045357727b9a6210dc54a75ac5713ae81a83ff9522f36aeb22e42
170 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a malicious redirector. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to trick the user into clicking the link, likely for malicious purposes. The presence of numerous external links, many pointing to Shopify, indicates a link farm strategy. 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.
  • 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.
  • 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.ru/pify?keyword=vidmate+free++for+android+version In PDF document text
    • http://xapemoxuk.carieasteele.org/uploads/1/3/0/7/130775195/ba1594adb3b.pdfIn PDF document text
    • http://files.heartconnectimproveyourlife.com/uploads/1/3/1/8/131871852/ninot-metokivifiwebim-begin-gugemo.pdfIn PDF document text
    • http://files.rnscmasters.org/uploads/1/3/2/6/132682093/jeluximazatumobago.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/1/0430/7409/3217/files/28625936266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/fizasijomotepuvosulijal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/jajoged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4683/6123/files/turuwedagirezuwumowika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/tableau_training_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/24591748607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/le_syndrome_pyramidal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/7158549570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/19165456633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/asbestos_awareness_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82127534182.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
🗂 Part of campaign: rnscmasters.org 3 samples

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_off00006893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6893 5044 bytes
SHA-256: dfb1f3dbae1ebf85ed6e0aa4b5e4c2391c9e8f2c54de349558a1a66dd651b55b
font_01_sfnt_off000079ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 10324 bytes
SHA-256: 44ea330e794c466a2ae2b025ace2848313cb2ccc8333edf1394d0c6aa125ddf1

Open this report in the interactive analyzer, or submit your own file for analysis.