Malicious PDF — malware analysis report

Static analysis result for SHA-256 600f1083e3235a06…

MALICIOUS

PDF

35.6 KB Created: 2020-08-20 20:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7238425a4208adefdea8566ad05d10c3 SHA-1: 52bdf3c554140264ae9e0f2458561f96c87ac762 SHA-256: 600f1083e3235a06950e87149b1ed652426f58831175dcd17b18548f16747d76
154 Risk Score

Malware Insights

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

The PDF contains embedded links designed to redirect users to malicious infrastructure, masquerading as a coloring sheet. The primary malicious URL identified is https://ttraff.cc/pify?keyword=pink+flamingo+coloring+sheet, which is flagged as a known malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest an attempt to direct users to malicious content, likely for phishing or malware distribution.

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=pink+flamingo+coloring+sheet
    • http://nojesoga.safespacesupervision.co.uk/uploads/1/3/2/6/132695839/8017293.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/89295749819.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6911/files/63897105007.pdf
    • https://cdn.shopify.com/s/files/1/0463/5954/3969/files/sojerudeturiku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1513/3605/files/mupesabijeti.pdf
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/40337669151.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/22687224362.pdf
    • https://cdn.shopify.com/s/files/1/0437/4288/8097/files/18851094540.pdf
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/9460858232.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/28103145466.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/98281636050.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/pexutarigupuzawot.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_off00004e8c.bin
35143c82f1a1465446b84645da06c3e1b17d64cbd599ffba9aaeefd45a11e62c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E8C 5360 bytes
font_01_sfnt_off00006099.bin
4655b90ff6a3528d8bb30422506a0e56b1388a3567ce6452f3a28c27bd13f371
pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 9824 bytes