Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe709f07bb07e22…

MALICIOUS

PDF

46.7 KB Created: 2020-08-25 18:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6ae69f6b6c355ed60e28944cf48cd38 SHA-1: 1b1e117ca7b3dd91218e801edc339ae8db951815 SHA-256: fbe709f07bb07e2232ee7383989d7ad21c6dd03f40c25c71f774d0472a47e5a5
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with text related to a game guide. The PDF also contains a large number of links to external PDFs, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure malicious destinations. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/pify?keyword=warhammer+2+dwarf+guide
    • http://files.grovecityfoodpantry.net/uploads/1/3/1/3/131398242/gifugejaxapibut.pdf
    • https://cdn.shopify.com/s/files/1/0432/1633/9111/files/lasiodora_parahybana_tarantula_care_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/14873522687.pdf
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/45102050453.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/41801162120.pdf
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/tixagapuwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/biblia_evangelica_cristiana.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/18355498828.pdf
    • https://cdn.shopify.com/s/files/1/0438/2785/5517/files/78110894707.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/atv_chassis_design.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_off000078cc.bin
bac180c2be9ddf4623b8b33de87da300818a5b765f60e140f8bf26df563f1134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CC 5348 bytes
font_01_sfnt_off00008af6.bin
ef94a0e9d08082f530c691740c85fbc32f6926aa18fb0d79f1bb308d6c5fab98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF6 10240 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.