Malicious PDF — malware analysis report

Static analysis result for SHA-256 529d0aadbb5c9809…

MALICIOUS

PDF

33.4 KB Created: 2020-08-05 06:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c75836a268e6fdadc75e06560355a2 SHA-1: f6bd8432576d57dc8a6dd01772665bc25dfc4221 SHA-256: 529d0aadbb5c9809c33b068dbc1e51fd9ac17db854244466843914e9e75e8d38
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which points to `ttraff.cc`. The document body also contains this URL, suggesting an attempt to trick the user into clicking it. The presence of numerous other links, many hosted on `cdn.shopify.com`, indicates a link farm strategy, likely to improve search engine ranking for malicious content. The primary malicious IOC is the redirector URL.

Heuristics 3

  • 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 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=biological+science+r+soper+pdf
    • http://files.maschmeyer.com/uploads/1/3/1/3/131378838/putedogovo-piretelaso-bonuwezi.pdf
    • http://files.jinntonic.com/uploads/1/3/0/8/130874055/9090856.pdf
    • http://files.immanuelyoungadults.com/uploads/1/3/0/7/130740522/venadumebogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1430/7496/files/lowemoxivoguse.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/2004_volkswagen_jetta_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/zulalisizusakawop.pdf
    • https://cdn.shopify.com/s/files/1/0435/4696/8218/files/44642441372.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdf
    • https://cdn.shopify.com/s/files/1/0440/1994/1541/files/18343832945.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/gutiligapotapi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/85367092097.pdf
    • https://cdn.shopify.com/s/files/1/0432/7522/3200/files/56371975276.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/sodenesiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/riniguxug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30551251375.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_off00004530.bin
decb126a2e4ea6e237c19f2b78c819bd057b5ed8e425c35c1a8600f2379cc9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4530 5372 bytes
font_01_sfnt_off00005788.bin
3bdaeca103286058f0568c556b904444ab71d3870ad9ea21e851826af258029b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5788 9860 bytes

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