Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed714320dbce9ac…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 06:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46948cb4f192a10b6067d8965b55556b SHA-1: dc2c49c8479aec59231f62db07807dcdb31ef580 SHA-256: bed714320dbce9ac05ae27b2ddc77d55c0d87f8bcac79b4b9249a00efd8a3e91
160 Risk Score

Malware Insights

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

This PDF document contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also features a large number of external links, many pointing to Shopify domains, suggesting an attempt to disguise malicious links within a seemingly legitimate context. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector heuristic. Additionally, a high-risk heuristic flags a lure for remote support tools, suggesting a potential pretext for further compromise after the initial redirection.

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=french+learning+books+for+beginners+pdf+free+download
    • http://sojerokim.mikeparamore.com/uploads/1/3/0/7/130776407/rupuzetora.pdf
    • http://files.infantastics.net/uploads/1/3/1/3/131398360/7625758.pdf
    • http://buraru.pickledpretty.com/uploads/1/3/1/4/131453870/8096420.pdf
    • http://files.azbasketballcoaches.com/uploads/1/3/1/4/131483281/061aeda8a261002.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/50314936125.pdf
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/camtasia_studio_8_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/54821790017.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/stanley_garage_door_opener_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/36230266081.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/mogenemolosuwimunafex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamawogedeveredu.pdf
    • https://cdn.shopify.com/s/files/1/0451/0951/0297/files/assignment_abroad_times_today_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/crash_jerry_spinelli.pdf
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/zugubutidegobosuwoxobebis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0215/0557/files/cd4052be_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/ray_box_intersection_glsl.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/bokoxikejigera.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_off000064d3.bin
fa307886f0dfdd81f132c08f340ccf69d8d9260bdd9eb5c7a57b3ca478885fba
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 5668 bytes
font_01_sfnt_off00007815.bin
2262d32eca62c126d44b432233ec8a1167a66b3f1d4a0771613f5ad836220d12
pdf-font-stream PDF embedded font (sfnt) at offset 0x7815 9796 bytes