Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d1d722d242a423…

MALICIOUS

PDF

65.6 KB Created: 2020-08-01 19:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dafd8e80d541585c9a67d0b0dec5803 SHA-1: b86a5e4ffe8ae7a9ed0cfbfb6e638a7121accbaa SHA-256: 26d1d722d242a4239ba07d4b23528f1982aee1dd5e62c5c1d48ec4832a656c27
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=my+balls+manga', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of numerous PDF links and a malicious redirector indicates a link farm or redirection attack.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=my+balls+manga
    • http://files.newtekjournalismukworld.com/uploads/1/3/0/8/130874120/sidonesafegomazupop.pdf
    • http://files.angelagoodmanart.com/uploads/1/3/1/4/131455543/5bc44bbc07427f.pdf
    • http://files.ohioaux.com/uploads/1/3/0/7/130775361/detomexapipid_debutitisudor_dovewuwoguju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/82343716245.pdf
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/98434294970.pdf
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/wadomak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/78258073717.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/padimonopusilumabedesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/thr_gegar_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/28680916102.pdf
    • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/46729667047.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jewepogepavab.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/fikexezopasimixurosubato.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/dosenefidewizomi.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_off00009483.bin
1303c6e4df5d402d02e3e7592ffb3e6ee7a3b0bee13c88fcde0d28e75ac061bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x9483 10292 bytes
font_01_sfnt_off0000b695.bin
40273654c1ffbc6a714b18d81fec4afe7679e7dac64d2d3631cec419720cf380
pdf-font-stream PDF embedded font (sfnt) at offset 0xB695 5156 bytes
font_02_sfnt_off0000c825.bin
c5f61c676fbd0da753c95060d7b3e86ebb15a477f820cdf41dd351181e9cf303
pdf-font-stream PDF embedded font (sfnt) at offset 0xC825 15968 bytes