Malicious PDF — malware analysis report

Static analysis result for SHA-256 e632bab82bc88713…

MALICIOUS

PDF

34.3 KB Created: 2020-08-06 13:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88272c7ed2183d037c14ad54e89296fb SHA-1: d35b3948f78f95353cb22ceaae01c9fe44c2a504 SHA-256: e632bab82bc88713192b969a0eeea505b8a8f29efa7adfa13a00f23b8f4ec668
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=positioning+strategy+journal+pdf'. This indicates the document is designed to redirect users to malicious sites. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The document body contains obfuscated text and the malicious URL, reinforcing the lure. No scripts were extracted, limiting the analysis of further payload execution.

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=positioning+strategy+journal+pdf
    • http://misuxenev.xcores.org/uploads/1/3/0/8/130813866/3028738.pdf
    • http://files.grogro.co.za/uploads/1/3/1/3/131397996/244207.pdf
    • http://files.chelseagilmoreart.com/uploads/1/3/1/4/131407138/3311643.pdf
    • http://files.tlcmachinequilting.com/uploads/1/3/0/7/130739084/fogofu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5281/6798/files/rixegedemalalepopef.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/diriwinad.pdf
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/37449257966.pdf
    • https://cdn.shopify.com/s/files/1/0436/9216/3227/files/77057432459.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/20295673115.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/18408877183.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/84854236603.pdf
    • https://cdn.shopify.com/s/files/1/0438/4296/1570/files/cbse_class_9_english_beehive_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/numabumexedenarimopa.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/warelijuvamekujeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/zewugolitunatazofufifejiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/safesirigejutujutufadilin.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/45934327566.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/26697823887.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_off0000478d.bin
0566b6c563afe3c6e4344748e8a80b54c686f3ff121157d34920d291a5054788
pdf-font-stream PDF embedded font (sfnt) at offset 0x478D 5388 bytes
font_01_sfnt_off000059ff.bin
f34f493b249d9bf1778325166665ede7298e829d26e4a7ae117cb64979fbef42
pdf-font-stream PDF embedded font (sfnt) at offset 0x59FF 10008 bytes