Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d97f44b0c7512b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 05:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba1a7dc3d67d2ed4ad4a78c98a6e95f SHA-1: 07dcd773f34cc95f83627f69189f25497040e6e2 SHA-256: a4d97f44b0c7512bbeb6b4a429ad766df504d37d2332db07afe7e2513916c095
160 Risk Score

Malware Insights

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

The PDF contains a lure for a remote support tool, instructing the user to install or connect with such a tool. It also contains a link farm pointing to numerous PDFs, with one primary link redirecting through a known malicious infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL and several other embedded URLs, suggesting a phishing or scam attempt.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=android+tv+remote+app+sony
    • http://botajit.techknowinvestroadshow.com.au/uploads/1/3/1/3/131379965/buratasabiwomipe.pdf
    • http://files.quranhomepro.com/uploads/1/3/0/7/130776101/5a949.pdf
    • http://files.theapronboutiqueshop.com/uploads/1/3/1/4/131452953/b36f970e.pdf
    • http://popakiniz.visitwesternheritagecenter.org/uploads/1/3/1/4/131437724/jelalon-wevid-metixivuwowuvok-xegofitenefi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/bupuzepikogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/d_d_3._5_monster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/panasonic_switches_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/xiwaxuxijokuranujazevediw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9847/2605/files/electronics_projects_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/8958/2487/files/12583010507.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/disacaridos_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1073/files/skoda_rapid_accessories.pdf
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/behavior_chain_analysis_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/0910/4279/files/equivalent_expressions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/43435008532.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/97765839838.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_off00006812.bin
f5d31d7262c5b442299bb561244df7436953b0fde445c8f07b96d4c01de77335
pdf-font-stream PDF embedded font (sfnt) at offset 0x6812 5224 bytes
font_01_sfnt_off000079c4.bin
94a3759411ef13978c473888fa650f3437d2d8b9c2cca37419cec0404550edc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C4 10108 bytes