Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b06f22bb202e2e…

MALICIOUS

PDF

47.4 KB Created: 2020-08-26 10:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac1ca7503550d390bf76c39ad88f87d7 SHA-1: e9f447145ff9fa7366f8cfb3c4c1ef80f6986708 SHA-256: 16b06f22bb202e2e8e3b613947dc54d3099ef9e4f32219f9f92c91f57c847c8b
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.link', suggest an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the structure and heuristics strongly indicate a malicious intent to lure users to external resources.

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.link/pify?keyword=ice+station+zebra+book
    • http://files.givoie.com/uploads/1/3/1/6/131636725/b72ec93305.pdf
    • http://files.trueelevation.org/uploads/1/3/1/0/131070765/4807bfe0287e0.pdf
    • http://files.tinshedfarm.com/uploads/1/3/0/7/130738806/cf2634439.pdf
    • http://files.latchcottage.com/uploads/1/3/1/4/131453847/pivesojoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/zunewilajopepuvexitoveki.pdf
    • https://cdn.shopify.com/s/files/1/0431/0994/1414/files/ziniba.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/beledazuporabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6722/7811/files/50283739364.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/degobik.pdf
    • https://cdn.shopify.com/s/files/1/0438/4948/2400/files/zazumotiwexigo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7750/1079/files/vaastu_shastra.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/41282263225.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/gumatezokitujovuma.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/mutisatakadozifiretonol.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_off00007dbf.bin
fa2a2261d1dae9c182bb9fe83b0790e52b0cbe34b34586374082408973bde6b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 4952 bytes
font_01_sfnt_off00008ea1.bin
8b50c34318167ba5ca12f0b319d31ac322567fe9ef23a3d130fded3e630c1495
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA1 10076 bytes