Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35c042db92d2474…

MALICIOUS

PDF

49.8 KB Created: 2020-08-12 19:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ffa1565f84ceec63e9715aa84248da SHA-1: 119b68bbaa47429b10dda946345ddb50f5744e73 SHA-256: e35c042db92d2474a66a7de7d14391c524283ba921e94573d97b817755058f35
150 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a mass of external PDF links, many hosted on Shopify, which is indicative of a link farm or SEO spam campaign. The primary malicious URL identified is https://ttraff.cc/pify?keyword=manuel+castells+rise+of+the+network+society+pdf, which likely serves as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=manuel+castells+rise+of+the+network+society+pdf
    • http://files.elkhornfumc.com/uploads/1/3/1/4/131438567/rofolapime.pdf
    • http://files.hadadithaimassage.com/uploads/1/3/1/6/131606011/lanoxoj.pdf
    • http://fogojaso.thedevilskaiju.com/uploads/1/3/1/6/131637881/nonumal.pdf
    • http://files.whitebridgestables.com/uploads/1/3/1/0/131071252/patiludofugumel_revujodumig.pdf
    • http://files.katephelps.com/uploads/1/3/0/7/130775825/5923422.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/the_passion_of_perpetua_and_felicitas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1289/8461/files/notupejuguju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/upsc_cds_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/datupaxusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/94773311776.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/gowipopafesatuzetofidok.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/12914427325.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/tesun.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/69063062378.pdf
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/likonigajixitumakivosove.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/lepitejezixewiwusuwar.pdf
    • https://cdn.shopify.com/s/files/1/0428/8181/0599/files/30822301303.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_off000083e2.bin
ec4c94eade7cc0c5516e0ea6470f5700056d5591de71469b7630cbdb812d8015
pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 5508 bytes
font_01_sfnt_off000096b1.bin
4b71f287c4efb2a6524ee11346de1249927ef7b7c0b1d2ddcace99a59cf1baac
pdf-font-stream PDF embedded font (sfnt) at offset 0x96B1 10128 bytes