Malicious PDF — malware analysis report

Static analysis result for SHA-256 889bef7ae5cc8794…

MALICIOUS

PDF

53.7 KB Created: 2020-08-03 17:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62f6d15f1c971b2c125b145aa0b11bb6 SHA-1: 3bfb74e6e1304ee562609801d295eec612c652ed SHA-256: 889bef7ae5cc87948d8b661381b60f8717179c24cc0501e928dbf987b2c2cfdd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=deep+breathing+and+coughing+exercises+pdf'. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or credential harvesting. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent.

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.ru/pify?keyword=deep+breathing+and+coughing+exercises+pdf
    • http://files.flos5dollarhouseofbling.com/uploads/1/3/2/8/132815882/bigokona-taxilujiwozaniv-nawipegefonok.pdf
    • http://files.sandylanhamphotography.com.au/uploads/1/3/2/6/132681210/1237855.pdf
    • http://files.seetheworld.tours/uploads/1/3/2/8/132815961/bawifutopite.pdf
    • http://files.sydmocreativeco.com/uploads/1/3/0/9/130969151/926063d9920a394.pdf
    • http://selumasup.pupfishcafe.com/uploads/1/3/1/1/131163635/gotudux_zeturokabed_fufaxegevub.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/3808773837.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1999/files/50462282713.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/75180558585.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/nejabofewobezineg.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/23567713846.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4996/files/nuveriwejokogudoleliwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/mr_biggs_contagious.pdf
    • https://cdn.shopify.com/s/files/1/0429/2139/4343/files/bls_instructor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6374/6453/files/employment_application_form_texas.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/73621255278.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/11104372005.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/cognitive_behavioral_therapy_adhd.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_off000075f5.bin
5c5235553166b348fba7d4ad7e7e3ee7161ab56f0baccd1931b575d3f26fd547
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F5 5476 bytes
font_01_sfnt_off00008887.bin
005f6a44afd69f30cf92524aa759caba3b2e96d73810b96f4336348f36cdd88b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 16144 bytes
font_02_sfnt_off0000bb17.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB17 4324 bytes