Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1205b0fe6c7a03…

MALICIOUS

PDF

36.6 KB Created: 2020-08-15 03:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 750241e6b261f4ea5f8e0bb3bc11c6d0 SHA-1: 1f9917ff82caf4810cff50853a1e22427db81f89 SHA-256: ef1205b0fe6c7a030c6106843bf4c6c17b1555e5fdd3c9ac59bda7f74e59d810
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=atecnica+mx3+pdf, which likely serves as a lure to a phishing or malware distribution site. The document body contains garbled text but includes the malicious URL and several other PDF links, suggesting a link farm for SEO poisoning or to obscure the malicious destination.

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=atecnica+mx3+pdf
    • http://files.joanridsdel.com/uploads/1/3/1/3/131380773/mesexezajiz_waxag_zowejufafere.pdf
    • http://files.mbapierce-rex.com/uploads/1/3/1/3/131384121/613366.pdf
    • http://files.cdietconnections.com/uploads/1/3/1/4/131483153/luwis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/bujitusufalufepodusinorer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/68339373700.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/xetobaxaxif.pdf
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/5428506993.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/23388393974.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/anthocyanin_structure.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/18988190534.pdf
    • https://cdn.shopify.com/s/files/1/0440/7279/6310/files/jajulorif.pdf
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/fawejuzera.pdf
    • https://cdn.shopify.com/s/files/1/0435/8973/0472/files/jodute.pdf
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/pamapufabaxepejebomika.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_off000051b4.bin
0fc06233d3a2b7b09f2d595ade15f167c01b223630055a9395f53172cd5369c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B4 5216 bytes
font_01_sfnt_off00006365.bin
e63c3b70d1fdfc37277d8a2c02b076743983523591caa93517f7990d4121ca05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 10096 bytes

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