Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f4863ca368cc9c…

MALICIOUS

PDF

46.0 KB Created: 2020-08-24 01:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032dbbb28b0fe027123200a640177158 SHA-1: 072c513f2f9a893c197687203588ea1c7e5ea546 SHA-256: 86f4863ca368cc9cbcdc21188f290ff33d685528c5d31c5988b0f1e4cc67b7e1
200 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a malicious redirector link disguised as a lure for 'Google chrome free for macbook air'. This link likely leads to a download or further phishing attempt. The presence of a visible LOLBin command execution instruction and a browser installation lure indicates a social-engineering tactic to trick the user into executing malicious content. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=google+chrome++free+for+macbook+air
    • http://files.bonuselkantler.com/uploads/1/3/0/9/130969887/vobixa.pdf
    • http://files.dcmdesignsonline.com/uploads/1/3/1/0/131070792/8754058.pdf
    • http://files.warwickmixedhockey.com/uploads/1/3/1/0/131070845/db15e9364.pdf
    • http://files.sandpointeshores.org/uploads/1/3/1/4/131406344/323e6fdf655b.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/convert_cdr_to_ai.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/fozixidonaxik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/40360319037.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/sisotuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/nerivutitose.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/vofijuki.pdf
    • https://cdn.shopify.com/s/files/1/0428/4301/3287/files/pebuxikogubovewuzuli.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/reading_plus_level_k_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/kubota_rtv_900_parts.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/juremem.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/scriptures_on_business.pdf
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/suluxamexezo.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_off000069f9.bin
6cb343ef8cac80021382328a38ead72e09e902d582b21fb91cd429bb06b9725b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 4956 bytes
font_01_sfnt_off00007ad4.bin
fc9d19704f5664ca41c3607f4c895bfc5f239cdd43c9187b7eca8c31c8e1fcc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD4 9996 bytes
font_02_sfnt_off00009d04.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D04 4324 bytes

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