Malicious PDF — malware analysis report

Static analysis result for SHA-256 d248bb5fe5b285d2…

MALICIOUS

PDF

46.7 KB Created: 2020-08-25 22:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ed32fe0394118413920b0a7582c6bc6 SHA-1: f8090badbb0f3e924ec2282d2270967e84097348 SHA-256: d248bb5fe5b285d2fca98c11a8490f7a9f5fef33f2c955e836a51a7967951d71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.cc' which is associated with an iCloud unlocker lure. The document body and embedded link farm heuristics indicate a phishing attempt, likely to harvest credentials or deliver a second-stage payload. The SE_MFA_LURE heuristic further suggests an attempt to trick users into providing sensitive authentication information.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=icloud+unlocker+software
    • http://files.affordablehomeservices.us/uploads/1/3/2/6/132681851/6849591.pdf
    • http://xagisi.timberlinehunting.com/uploads/1/3/1/4/131483083/fegamek-xexemu.pdf
    • http://files.xpsoi.org/uploads/1/3/2/3/132303353/3a11b0952.pdf
    • http://vemepav.phase1trackclub.com/uploads/1/3/2/3/132303382/melifide_wukukezogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/xekutowekof.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6741/files/free_expense_tracking_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/8335/0687/files/magisterium_the_golden_tower_download.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/bullet_time_fighting.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1542/files/filmic_pro_camera_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/76528165765.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/library_cataloguing_practice.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/jquery_on_checkbox_change.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/lexopasivaxofuzuzalukipub.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/58412586862.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c52.bin
47c53928ef14c2519278cf39748920b3c337cb50437f6cec8edd8c42171de7e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 4940 bytes
font_01_sfnt_off00007d2c.bin
2b6cb3bad701ee24aab557482363966c68be0445923996af8669b3898e2955f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2C 10160 bytes
font_02_sfnt_off00009ff4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF4 4324 bytes