Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5a079cc52c3db3…

MALICIOUS

PDF

45.5 KB Created: 2020-08-05 04:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41008f13bfc583a77bd5d29d37b21018 SHA-1: a77427e3fc051ec93637a8028fc77d80ca4d74dd SHA-256: be5a079cc52c3db3ad6ea5ce9cbab328db8a1d18920d26cb88dc1464e4b119a9
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.com/pify?keyword=diminutivos+y+aumentativos+primaria+pdf' leads to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is part of a link farm, likely to improve search engine ranking for malicious content. The document body, though partially corrupted, contains the same malicious URL, reinforcing the lure.

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.com/pify?keyword=diminutivos+y+aumentativos+primaria+pdf
    • http://files.enzopizarrodesigns.com/uploads/1/3/2/6/132695491/2702735.pdf
    • http://files.cianiscience.com/uploads/1/3/1/3/131382841/tofotimidutu-nuganilexif-bovale.pdf
    • http://files.burrowsmemorial.org/uploads/1/3/1/3/131383319/a9c859aae30.pdf
    • http://files.publichealthbaron.info/uploads/1/3/2/6/132681901/8360923.pdf
    • http://files.nokillhuntsville.com/uploads/1/3/1/4/131455883/jalupi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9789/1751/files/serasitenidupurigoribatib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/urc_8820_cisco_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/react_native_component_lifecycle.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/lilowozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/vukiropuvibuliroteb.pdf
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/46444956866.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/xujogote.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3799/files/voripikazip.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/supetaraxupuwumagodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/rutotilivubuzanut.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/99405344086.pdf
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/fawujawowurixumoregik.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_off000067a7.bin
e0e8cbcf1183cade4d7051fe5f1d4fbf9c967459d477cb3f5f8fc91285ef93fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A7 5316 bytes
font_01_sfnt_off000079b2.bin
9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B2 2092 bytes
font_02_sfnt_off00008353.bin
6679092ce8eaed775da27ebc6dd3d08b8876c62dc2362f3a28148ef36cf92b94
pdf-font-stream PDF embedded font (sfnt) at offset 0x8353 10984 bytes