Malicious PDF — malware analysis report

Static analysis result for SHA-256 d040b092229a1763…

MALICIOUS

PDF

78.0 KB Created: 2020-09-07 07:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0155480c0db01faa85779e5a2b8d5c46 SHA-1: 2d34854cfcb954487c9828bcfd5a0b0f3af69fae SHA-256: d040b092229a1763a95b03e95fb58a5e4d674a72d788fb53a8d448ef0e226cdf
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to ttraff.ru, and another for a PDF link farm. The document body, though heavily obfuscated, contains text related to 'lodgers tenancy agreement template free' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary intent appears to be redirecting the user to malicious infrastructure.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/wix?keyword=lodgers+tenancy+agreement+template+free
    • https://static.usrfiles.com/ugd/b8c837_ad69518613604b57992494a838919344.pdf
    • https://static.usrfiles.com/ugd/7041e4_e00da239266a4f73a480c9ba0d5778b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a656143f4a0e461e9222c9593b639648.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/vavadidokifexetumeje.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/podovamigizafakeguxomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/8865167418.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/nefibuvugumusiralex.pdf
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/vuvaxivebalunuwobajex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4487/1063/files/pefibegopivizeve.pdf
    • https://cdn.shopify.com/s/files/1/0427/8157/3279/files/40131888445.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/kadawejopix.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/
    • https://static.usrfiles.com/ug

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb36.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB36 2828 bytes
font_01_sfnt_off0000f530.bin
f8953fbc91151fec977fe13222b623071d1e51c043956a38c10ea03ee9b2da42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF530 5516 bytes
font_02_sfnt_off000107ee.bin
5372557442579499bbdbe80db5d651b9158301e46336cc66286f58b1d368dd9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 10088 bytes

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