Malicious PDF — malware analysis report

Static analysis result for SHA-256 80dc44ce2ab5f1af…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 04:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84b0f72f70076dc1ea7f7a380ffaec65 SHA-1: 8d792cc1ec3f1e1c583286c5d1c31b5430b939df SHA-256: 80dc44ce2ab5f1afdc51f090b5eb874724746961620b3a68703433295a00eeca
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for binary options trading content. The ML classifier strongly indicated maliciousness, and the presence of numerous external PDF links suggests a link farm designed to attract traffic. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=binary+options+candlestick+patterns+pdf
    • http://files.montalvofoodwine.com/uploads/1/3/0/7/130776246/5894835.pdf
    • http://files.rita1027.com/uploads/1/3/1/4/131482819/9893929.pdf
    • http://files.suzannegrantham.com/uploads/1/3/0/7/130740316/xutewifobesi.pdf
    • http://lerofuw.mikeshieldsphotography.com/uploads/1/3/2/7/132712407/5812499.pdf
    • http://files.mattminnicino.com/uploads/1/3/1/3/131383533/waretitun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/14701207392.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/51338566025.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/faferobobuwuzimoweg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/veforufapukew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/48913269768.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/9522711.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/pitonisuzixaletanilesoru.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/48239510927.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/28424060033.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9703/files/koderivuzamipa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006371.bin
a12788dd6047838a453821b13d029ed94fc55e7041262aaa052aee18407ffac4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 5364 bytes
font_01_sfnt_off000075c0.bin
d11d7ebfc9d13f8eed4f6451b8a03d13fb1a1c69cd1b40ac36f42d5b4b0f7574
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C0 9928 bytes