Malicious PDF — malware analysis report

Static analysis result for SHA-256 50735ce199b11d18…

MALICIOUS

PDF

139.8 KB Created: 2020-08-21 15:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6b307bb2f42737d872d27f77d53d0f7 SHA-1: 8afc611a9819fb4e90de383223693dd5d3af52ea SHA-256: 50735ce199b11d188ba9a379600859f65dca3786cb2a4574d2acf87d8ce4f5b3
160 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 'https://ttraff.com/pify?keyword=all+song+2019++punjabi'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, with a high heuristic score for a password-protected archive lure. The document body, though heavily obfuscated, contains the same redirector URL. These elements suggest the primary goal is to redirect the user to a malicious site, potentially for phishing or to download further malware.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=all+song+2019++punjabi
    • http://files.kendramurray.org/uploads/1/3/0/8/130814535/954c869831.pdf
    • http://files.sorensonwestwoods.com/uploads/1/3/1/8/131871690/xawupenitovawoke.pdf
    • http://gibikov.michaelspauley.com/uploads/1/3/1/8/131871745/fijonemur-siruripar-kuwekikoxivoz-gepisobu.pdf
    • http://files.midwaybaptistnc.org/uploads/1/3/2/7/132712369/e22b7.pdf
    • http://files.academiadeballetallegro.com/uploads/1/3/0/7/130776682/zosugonetexulu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xibazukikamemawamiwemin.pdf
    • https://cdn.shopify.com/s/files/1/0461/9835/8165/files/sazifupawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/85371060923.pdf
    • https://cdn.shopify.com/s/files/1/0437/2312/8986/files/aldehydes_and_ketones_chapter.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/sedejami.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/gst_voucher_entry_in_tally.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/boise_state_university_campus_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/9645/7884/files/47968285688.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/11907682478.pdf
    • https://cdn.shopify.com/s/files/1/0434/6668/6629/files/64713200939.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/best_gameboy_advance_emulator.pdf
    • https://cdn.shopify.com/s/files/1/0438/4397/7366/files/das_passiv_englisch_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/bribery_and_corruption_policy.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_off0001e2a6.bin
2c6f0b12e3fdecc234b047f1e6c9f2918427ffdaf86e62f359adbfbb606ab55b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E2A6 5576 bytes
font_01_sfnt_off0001f5b0.bin
4d62e2747b180147fe8c235d2ad7417dfcac92a6b27ff87dd4020c8415cef4ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F5B0 14320 bytes