Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc006fa310690a4…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 05:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1388b4daec663a3e2f1d1e0727f15efa SHA-1: 89b8acce004fbf2d152cffdd9f8f1a78a5b9376d SHA-256: 4bc006fa310690a4d2d1eb1cbda6fce0e6bb3e9d89d3ec31437897c08d17352b
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a download for a PS4 emulator. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body also contains the malicious URL and a benign-looking PDF link, likely part of a link farm. No scripts were extracted, but the primary intent appears to be user redirection to 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ps4+emulator+apk+free++for+android
    • http://tuvases.northwildlifefoundation.org/uploads/1/3/1/4/131438692/6534783.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/production_capacity_planning.pdf
    • https://cdn.shopify.com/s/files/1/0429/6533/6217/files/optical_isomerism_in_cyclic_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0432/0146/2436/files/21482342288.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/47273785079.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9936/files/nodepedesizazibilujigudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1411/0880/files/febrile_seizures_plus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/craftsman_lawn_mower_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4966/files/10131082307.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/xakukifa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059fd.bin
2adeb1d19ad801275fc986f7cf651061cfb5687c204fa6ee0fc75a049e71a5fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 5220 bytes
font_01_sfnt_off00006ba7.bin
7d162041e9e27b526872936b41fb3d6f2b1a0af24e06d6fb2d87617818db9f4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA7 10972 bytes
font_02_sfnt_off00009118.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9118 4324 bytes

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