Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd06d59cc47a247…

MALICIOUS

PDF

88.0 KB Created: 2020-08-04 02:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7892911f1d951a731b64f7f437c2bb4f SHA-1: fdc0d7f453796d08a1e5cf30a75b4f4d8d2468ec SHA-256: 1fd06d59cc47a24798c41fc4ae0cdaf00df0f2f42fe19676959dcea703309e26
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the string 'Apprendre l italien pdf gratuit' and the malicious URL, indicating a lure for users seeking free learning materials. The redirector URL likely leads to further malicious content or exploits.

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.cc/pify?keyword=apprendre+l+italien+pdf+gratuit
    • http://files.pureessentialslightcenter.com/uploads/1/3/1/4/131406149/505fe384f4d.pdf
    • http://files.natethehitmaker.com/uploads/1/3/1/0/131071067/db5278a9861.pdf
    • http://files.janemcdowellart.com/uploads/1/3/0/8/130814397/3538ec40f1.pdf
    • http://files.marcatunm.org/uploads/1/3/2/8/132814400/8ca76449ee.pdf
    • http://files.makercrew.com/uploads/1/3/2/6/132681586/8108622.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/rosiru.pdf
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/davajelagovewiwimaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/44181791213.pdf
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/41726316210.pdf
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/37687633275.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/introduction_to_modern_astrophysics_carroll.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/fadag.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/39424967906.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/12054226544.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/93013987522.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/52235492678.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/malware_wmi_event_consumers.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_off000117f8.bin
792d9f8e8668026de97c8504844ca311a28f78de95aa55dcabff6508bc058e28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117F8 5020 bytes
font_01_sfnt_off00012921.bin
dffca61b1adb248fbbeb77680de92e825608789d7ec6ac6552818e5f49b1f5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12921 12808 bytes

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