Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1de317ea9aa8bba…

MALICIOUS

PDF

55.8 KB Created: 2020-08-14 04:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acd1e126078d1dbd93d5347ca1159093 SHA-1: eccee174b14108065368e84af56eb562375b14d8 SHA-256: e1de317ea9aa8bbaf6f1bf814ca72b10ac4372a6a0330a3fdc04a676f1e20ce8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a corporate brochure template. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document and a malicious redirector.

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.com/pify?keyword=corporate+brochure+sample+template
    • http://files.charteredengineers.org/uploads/1/3/2/7/132740930/sofozugedejuvamek.pdf
    • http://files.equatorial-intraseasonal-oscillation.com/uploads/1/3/0/8/130874085/dijaxopi.pdf
    • http://files.glasgoweagles.org.uk/uploads/1/3/0/7/130738933/5881980.pdf
    • http://bufomaw.friendsofmaxx.com/uploads/1/3/0/7/130776553/99fddb5bc1c46.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/23497906794.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/spanish_family_tree_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/easy_classical_piano_songs_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0439/2668/3816/files/bojiduwumosov.pdf
    • https://cdn.shopify.com/s/files/1/0446/6461/9171/files/despicable_me_1_movie_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3557/files/sosekadekow.pdf
    • https://cdn.shopify.com/s/files/1/0447/3726/5813/files/burlesque_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/60270919261.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/28285029738.pdf
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/4131479449.pdf
    • https://cdn.shopify.com/s/files/1/0437/8053/8526/files/introduction_to_managerial_accounting_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/85689770192.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/
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/spanis

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009cf7.bin
202f52035d754ca1f72da05002259cbc148b25fbb90b7b7ef2fb86678ce8d39c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF7 5220 bytes
font_01_sfnt_off0000ae85.bin
f023ad4472deaf2f25513777ef818f171b578c30f08bbcd038bf7a688a6d3c70
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 10460 bytes