Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2fc7f9a2226ebca…

MALICIOUS

PDF

42.5 KB Created: 2020-08-09 13:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f919f9872299c980a2870bfc6968cd5 SHA-1: d664020b49362467c45eb7e4817f1e0891ca3b81 SHA-256: a2fc7f9a2226ebca71782153a9ec3504fefecc4fd851f2f462fb382099091c5e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple links, including one pointing to a known malicious redirector. The primary malicious link is https://ttraff.com/pify?keyword=difference+between+analog+and+digital+signal+processing+pdf, which likely leads to a phishing or malware site. The document body, though heavily obfuscated, contains references to PDF files and the topic of signal processing, suggesting a lure to trick users into downloading or interacting with malicious content.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.com/pify?keyword=difference+between+analog+and+digital+signal+processing+pdf
    • http://files.southcliffcommunitygroup.com/uploads/1/3/0/8/130814387/legawebupuxofure.pdf
    • http://files.wgchowardcounty.org/uploads/1/3/1/8/131871650/1767909.pdf
    • http://files.allisonpharris.com/uploads/1/3/2/8/132815015/dd23cd.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/macro_commands_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/edit_pages_order_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/lexique_d_assurance.pdf
    • https://cdn.shopify.com/s/files/1/0446/2955/7411/files/definition_of_public_relations_by_different_scholars.pdf
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/108484499.pdf
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/67829634834.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/wapeboluzugepeloj.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/godopawoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/20990654720.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/65841698022.pdf
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/donaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/2531824229.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006800.bin
3f601ebf9d0e3d0e162ed52054fc12c938f06419d3a8ce552c0fe689239c3446
pdf-font-stream PDF embedded font (sfnt) at offset 0x6800 5552 bytes
font_01_sfnt_off00007b05.bin
43e86aca24fc3878137364653694a53ae887d4336d48c729d24623bf1f427999
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B05 9680 bytes