Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddc3dbc7af11227…

MALICIOUS

PDF

37.3 KB Created: 2020-08-09 19:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86f3870bca0a1772e0a44c90ef3c72ed SHA-1: 369f7b4397c53e13364ced83c487f9f3e2e73fb4 SHA-256: eddc3dbc7af11227855493f00fa9bbb8bb0c70eddc74895d0283e997b978b5bb
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body text and embedded links suggest a lure for a PDF download, which ultimately leads to the malicious URL. The primary malicious URL is https://ttraff.com/pify?keyword=menschen+a1+2+arbeitsbuch+pdf+download, which is likely used to redirect the user to further malicious content.

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.com/pify?keyword=menschen+a1+2+arbeitsbuch+pdf+download
    • http://files.carpetcleanoahu.com/uploads/1/3/1/3/131383602/zefot_tujopopafodaja_kojubutujara_xapesiwuka.pdf
    • http://zolon.drivenfundraising.com/uploads/1/3/1/3/131383483/gumulodonizamodipawi.pdf
    • http://files.rockytopvacationhomerentals.com/uploads/1/3/0/7/130738998/sozaselewozubunado.pdf
    • http://files.axokok.org/uploads/1/3/1/1/131163872/zetemiru_wudolovuxij.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/56262686086.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/adobe_reader_offline_installer.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/fofipuvetulixodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/sopamupoxulagudifoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7108/files/data_structures_and_algorithm_analysis_in_c_4th.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/fekelukudokumuwexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/35495999155.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/5125082070.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/vewenuwonelelemivid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6260/7518/files/xorit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/zenawavawikom.pdf
    • https://cdn.shopify.com/s/files/1/0429/4072/7463/files/69902473885.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_off00004b1c.bin
bc9d6566ba9842bc8aaf4372db6701acdd8885805511a529eff4223c75986b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1C 5664 bytes
font_01_sfnt_off00005e7d.bin
9f945e33fcfc54532ec01fc6fbf7274f012ba47758e23bf0388d6e4eb68b3338		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7D 13164 bytes

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