Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b476d5fca81b2f…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 17:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f87bc67f9cb8cbb6e1aea404d16c3a74 SHA-1: 0f98ac71ca22458353db5f9a00c0372d2b3a40aa SHA-256: d2b476d5fca81b2f467430cc2402ec3e874e2c26e93d43f4f2af82229c10d3e1
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the true malicious destination. The primary malicious URL is https://ttraff.cc/pify?keyword=bleacher+report+live+app+firestick, which is likely used to redirect the user to a malicious site or initiate a download.

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.cc/pify?keyword=bleacher+report+live+app+firestick
    • http://files.andreasyoga.com/uploads/1/3/1/4/131437669/b02c29a.pdf
    • http://bodobak.sunflowerchamberorchestra.org/uploads/1/3/2/7/132740478/a3c9f62b1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/college_swimming_recruiting_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/kisepadofijogu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2274/3712/files/70210823162.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/11527879307.pdf
    • https://cdn.shopify.com/s/files/1/0437/1775/5034/files/bitcoin_que_es.pdf
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/bearing_capacity_of_rocks.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/27310093704.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/96391606608.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5589/files/torodedanogemowugorew.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8511/files/56552237248.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.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_off00006413.bin
66d491f469bb3c367ccf99359b8081c70f1e6b8bd4874347e43b892207322010
pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 4956 bytes
font_01_sfnt_off000074fd.bin
fce221f0d0918ebeba7dc739d99b7194f26edefa4c9d289d47ce2c99df69ee68
pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 10224 bytes
font_02_sfnt_off00009801.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9801 4324 bytes