Malicious PDF — malware analysis report

Static analysis result for SHA-256 4325db20245efcb8…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 09:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac42786d4f12c849c12f8244df5799dc SHA-1: 44c885e65910eb590d3db847a07519d1bc603df9 SHA-256: 4325db20245efcb8050046b35a98d755da94885a67c2aa583c49499fdc944e2f
160 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Whirlpool duet washer and dryer manual' and includes a malicious redirector link. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or abuse multi-factor authentication. The presence of numerous external links, including a link to a redirector, suggests a phishing or credential harvesting campaign.

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.ru/wix?keyword=whirlpool+duet+washer+and+dryer+manual
    • https://static.usrfiles.com/ugd/b8c837_3d3eb8c9cf294477bd1a2e232c109eff.pdf
    • https://static.usrfiles.com/ugd/b8c837_005d6b644292442da998f3d4725c3f8a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6d61d92a1c948e5b88b6573c3cee4dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b935660bb4b41b0a56ed5f44f4834f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_99ea93d438a34e9a980688eeb3c53495.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6e3535898044bbb9b0d3f5731ef2077.pdf
    • https://static.usrfiles.com/ugd/b8c837_17394378c2454fe4af15017234932237.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3570/files/material_safety_data_sheet_sodium_carbonate_anhydrous.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/adventure_time_season_10_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/color_psychology_in_marketing_the_complete_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/final_fantasy_12_action_replay_max_codes_all_weapons.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/76522028197.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6119/files/wekinalirojixonavepab.pdf
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/todaxevipadaxenozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/startup_budget_template_example.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_off000065f6.bin
b4d7daa6acf0ca68b22b18b5233de6c7b3df9f75d58d549bcd5cc70b2ed963b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 5408 bytes
font_01_sfnt_off00007841.bin
5168f34eb5cb134ae0fd3b23f594b03b1babe0ecff72c0b7df08c672dcc66afd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7841 10240 bytes