Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cea20ef833ea4fb…

MALICIOUS

PDF

45.2 KB Created: 2020-07-16 15:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76931d7ae2ecb195c529346e8a6da2b6 SHA-1: 0f7b221c56552db2de84d195da2595510d7c3e84 SHA-256: 1cea20ef833ea4fb05f1694dab181441306a644f34d1610b4c1f42e2d4fe0396
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine results or redirect users to malicious sites. One of the primary links directs to 'ttraff.com', a known malicious redirector. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is not to convey information but to host these malicious links.

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/wb?keyword=taenia%20solium%20y%20taenia%20saginata%20pdf
    • http://files.thebodydynamic.com/uploads/1/3/1/8/131872048/fa4ba.pdf
    • http://files.gopremio.com/uploads/1/3/1/1/131163747/matumuvirapa_jujelawis_dilefutanobire.pdf
    • http://files.photoblocker.com/uploads/1/3/2/6/132695732/6d560eeb.pdf
    • http://files.helturbines.org/uploads/1/3/1/3/131381607/tazoj-vogufozu-xikazofowusuxug-joxuze.pdf
    • http://files.jttreeserviceorangecounty.com/uploads/1/3/2/6/132681204/02b139e627ddeaa.pdf
    • http://files.teachermrbenson.com/uploads/1/3/0/7/130775384/b2d3d.pdf
    • http://files.darrennixon.com/uploads/1/3/1/6/131606284/fe30e46.pdf
    • http://files.cupoftime.com/uploads/1/3/1/3/131380612/8d8e5.pdf
    • http://files.chimerebaker.com/uploads/1/3/1/8/131860204/wilamofozenovidut.pdf
    • http://files.spacesmonterey.com/uploads/1/3/1/4/131454808/64dd10.pdf
    • http://files.jttr
    • https://xezomer.files.wordpress.com/2020/07/koniminirulakonexo.pdf
    • https://runudufaxali291364851.files.wordpress.com/2020/06/vukiwulifesa.pdf
    • https://jakuwil.files.wordpress.com/2020/06/54892006421.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/towavap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/4525762842.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/sitekuzekamizitonepap.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/gugumesun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/34092063832.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.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_off00006f8f.bin
f13198919e570778faccebc7c317ffc058d47322a6c14795c130e071196c9879
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 5200 bytes
font_01_sfnt_off0000813b.bin
c9b49c0b9612cb4019988c2b8f68cee8f66e9f156f778178b3a0a8ece4183e33
pdf-font-stream PDF embedded font (sfnt) at offset 0x813B 12148 bytes