Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c9e040df88fe81…

MALICIOUS

PDF

38.8 KB Created: 2020-08-25 16:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b024e98acd3504bbd4b2483e826296e SHA-1: 16e6e093d45ed60c4bb40ae4ac2ec322e3bb9de1 SHA-256: e7c9e040df88fe8190ad32bcbb3615766f6c1893cad0a4b55cc8a34e4552bc93
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=android+ndk+log2'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to obscure the malicious redirector or distribute content from multiple sources. The document body, though heavily obfuscated, also contains the malicious redirector URL. The primary intent appears to be directing users to malicious infrastructure via the embedded link.

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=android+ndk+log2
    • http://files.vivianmirann.com/uploads/1/3/0/7/130775115/b7d2c4916e5d37e.pdf
    • http://vojuv.sarahkellyhairstylist.com/uploads/1/3/1/4/131453060/352597.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/edema_agudo_pulmonar_elsevier.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/42993295017.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0739/files/lanop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/pozopo.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/mavapejarepewumiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/vuzikow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/24942553753.pdf
    • https://cdn.shopify.com/s/files/1/0438/0730/9984/files/79479753811.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/1082838963.pdf
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/79581062411.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/kufevowewojetasavixasuso.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_off00005b6d.bin
d552af53eb9eb9da4f77aba1c8c703db3fab48719785fc6a95ba9db8c80a5dde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 4792 bytes
font_01_sfnt_off00006bc9.bin
1bb4264f6335d13e80e1b73a8effaea87e72b425dba531c13f20699319c83817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC9 10304 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.