Malicious PDF — malware analysis report

Static analysis result for SHA-256 60048a5b7a63262e…

MALICIOUS

PDF

46.5 KB Created: 2020-08-21 20:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42383b6e6d0bfd332e524fc7fd8118ba SHA-1: 2f19b79b500058dc580b9743c42968c58837a720 SHA-256: 60048a5b7a63262e2d11bb1ddf55da832a9a09944a90ea3f2e11ecfe06a870d8
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=galvanised+steel+sheet+near+me', suggesting a lure to a potentially malicious site. The presence of many external links, including benign ones hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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.ru/pify?keyword=galvanised+steel+sheet+near+me
    • http://files.antonellascafe.com/uploads/1/3/2/6/132695887/7582891.pdf
    • http://xuxunidom.cjnyc.net/uploads/1/3/1/3/131383373/6842721.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/mathematical_logic_a_course_with_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/70588528303.pdf
    • https://cdn.shopify.com/s/files/1/0429/6487/7475/files/pinterest_dark_mode_on_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/batadeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/4497/7305/files/42870290012.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0742/files/candy_crush_saga_game_for_computer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/97358893741.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/24947599707.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/organizzazione_di_cemento_armato.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/jakawomovofedegabuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/unity_extension_methods.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_off00006c12.bin
1811e432acf2428a753e4e1510795322929fba3b3f3ce98b6a08bb9af02d21a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C12 5156 bytes
font_01_sfnt_off00007d76.bin
2f0ae9e3aff9a2476cc2e401af1ab4277506ce3deb5c5d1818bd387f24e72509
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D76 15424 bytes