Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25c2f23d959dc6c…

MALICIOUS

PDF

39.9 KB Created: 2020-08-30 00:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff3d96adf3a99945c4df0cda41fa9b70 SHA-1: 82f31c5310f727019568fb2469b4f26a91621af9 SHA-256: e25c2f23d959dc6c31fa49499c432ca59618c5fecdea3b2694ced0044bc999ea
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, mentions 'Pokemon red randomizer nuzlocke rom', likely a lure to entice users to click the malicious link. The presence of multiple Shopify URLs suggests an attempt to blend malicious links with seemingly legitimate ones. No scripts were extracted, but the PDF structure and embedded links indicate a redirection-based attack.

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.ru/wix?keyword=pokemon+red+randomizer+nuzlocke+rom
    • https://cdn.shopify.com/s/files/1/0441/3286/0056/files/4078277687.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/20775209119.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/wewubibobimasunewemiku.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/73399327257.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/causes_of_deforestation_in_zambia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/22419249249.pdf
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/37088046663.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/59504079305.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/sukugodafilo.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b2b338978544c079b0d69c166f3ebbb.pdf
    • https://static.usrfiles.com/ugd/cc03df_55ca156cd9d04ec8becca21a80800506.pdf
    • https://static.usrfiles.com/ugd/1be480_9f9263a95c034b9f8879367c1e771dcd.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_off00005f2d.bin
cbbe4a714a0de0004cbc2c414ae351dd036dbfa28852870e178c6e8ddf4eeb42
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 5024 bytes
font_01_sfnt_off00007029.bin
a34f58ac58249c21498f6f95034b3c2d10a2df50cdb6fae670103fdd8cc1c6e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 10192 bytes