Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c82bfe7042f538…

MALICIOUS

PDF

46.3 KB Created: 2020-08-24 05:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 773fa94fcaf69147193c65c5263e530f SHA-1: 807e5752862c1f2ea7a5a1edba6c1e8fd40bbc9e SHA-256: d6c82bfe7042f5387899734a79b87ea8426afb59e013a10573c988b11cd44995
208 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a software activator download. It also instructs users to disable security software and install remote support tools, indicating a social engineering attempt to gain system access or deliver further malware. The document body itself is heavily obfuscated but contains the lure text and URLs.

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=windows+7+ultimate+activator+free++filehippo
    • http://puradug.leverageleadership.org/uploads/1/3/0/7/130740086/7415234.pdf
    • http://lovum.tsnip.org/uploads/1/3/1/6/131606345/fulovu-nexebexolusip-xigiso.pdf
    • http://files.milepost0creative.com/uploads/1/3/1/4/131408142/8088500.pdf
    • https://cdn.shopify.com/s/files/1/0431/6050/2421/files/phpstorm_reformat_code_doesn_t_work.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/banking_current_affairs_2020_june_banking_awareness.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0597/files/34375821784.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/25156894670.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/brgeramt_berlin_anmeldung.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/cisco_packet_tracer_version_5._3_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/zozedijakifasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/32909398477.pdf
    • https://cdn.shopify.com/s/files/1/0462/2585/0519/files/755958274.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/96109669181.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/calendar_2020_uk.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_off000075b5.bin
0f09d73e27b9ce1954941bdac730d21164ca6ada577f2b9c7c0fc4da7935d308
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B5 5640 bytes
font_01_sfnt_off000088d6.bin
ddfe4bef78c9791f07c1428f6faca438e1b3708cfde27efff0a68e7d6c8c627d
pdf-font-stream PDF embedded font (sfnt) at offset 0x88D6 10420 bytes