Malicious PDF — malware analysis report

Static analysis result for SHA-256 90eb4e1275a45ad1…

MALICIOUS

PDF

51.5 KB Created: 2020-08-27 18:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe62eeb61e6fd98fc99118de723d5cf0 SHA-1: 27096b86566d10a0b5af7881724088b8158e6e31 SHA-256: 90eb4e1275a45ad1e8f10ef834deb26b136aca979f74b622439ab6661e44d20d
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL 'https://ttraff.club/pify?keyword=gauss+rifle+vs+railgun' is associated with malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of external PDF links, many hosted on cdn.shopify.com, which is often used to obscure malicious activity. The document body, though heavily obfuscated, contains the 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.club/pify?keyword=gauss+rifle+vs+railgun
    • http://gurekeg.nancypriff.com/uploads/1/3/1/6/131607163/zesuzapuvuni.pdf
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.pdf
    • http://files.flexitotz.com/uploads/1/3/2/6/132682565/nitofinuputekuf-rerave-roviruf-wumiluxel.pdf
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/jejemokeli.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/49118738333.pdf
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/evaluacion_del_aprendizaje_significativo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/all_about_me_worksheet_preschool_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/acidosis_respiratoria_y_metabolica.pdf
    • https://cdn.shopify.com/s/files/1/0465/4350/3518/files/curso_de_robotica_educativa.pdf
    • https://cdn.shopify.com/s/files/1/0436/7459/9574/files/risibivazemetijajirajar.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/ritelebijaluximesus.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/firefox_52_esr_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/bipawulegujetidovisuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/a_brief_guide_to_arguing_about_literature_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/84303602535.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/10972990795.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/75773323354.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_off00008ce4.bin
0af66ad9cd78d13571dadb71458b73ee3e5ebd387d91a13451ed02929f01f976
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE4 5024 bytes
font_01_sfnt_off00009e1e.bin
d70dd6289f97fb2f5487a5b58e857f58a4e7e2b66e32975fd0dda9b4219436fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1E 10168 bytes