Malicious PDF — malware analysis report

Static analysis result for SHA-256 812ec1017c65753d…

MALICIOUS

PDF

45.9 KB Created: 2020-09-05 22:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439bb839d545aaadd3b250ab8d3d7d24 SHA-1: 34b61b5597fb61028e7bfd24f3b6c29e22dbf1e2 SHA-256: 812ec1017c65753d68ee165d6f7750e9280dd3c2be97e5d8c5d2ff87c5882767
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document's content and structure suggest a lure, likely an invoice or payment request, to entice users to click the malicious link. The presence of a link farm further indicates an attempt to distribute malicious content or traffic.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.me/wix?keyword=envelope+address+format+sri+lanka
    • https://static.usrfiles.com/ugd/33c377_030bb903a07b46afab31fa7854b3e919.pdf
    • https://static.usrfiles.com/ugd/934fc3_4436feeb64fc41558ec0f78dfffb2465.pdf
    • https://static.usrfiles.com/ugd/a2de88_db2b654ba4274a94aa2c3a30efbd20e5.pdf
    • https://static.usrfiles.com/ugd/d54300_47f7f598fb374dd48c498d8e162f7d8a.pdf
    • https://static.usrfiles.com/ugd/ddb60a_7230d022da324cb7a37d6e353ea9a905.pdf
    • https://static.usrfiles.com/ugd/5a1791_de46242aad4b4826b2bd8fb12324ba9b.pdf
    • https://cdn.shopify.com/s/files/1/0450/2824/5654/files/juronekiweki.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/wirutukisi.pdf
    • https://static.usrfiles.com/ugd/b4609a_e0ce194a8ce44f2bb7eb4995a12e10f9.pdf
    • https://static.usrfiles.com/ugd/ac51ce_27e408b133d94f4db0a21ea0ed497eb0.pdf
    • https://static.usrfiles.com/ugd/b97cba_7c281c90183f46b28573627e51b75a31.pdf
    • https://static.usrfiles.com/ugd/33c377_eff3ccfbf2f0482aaff780eaab29be57.pdf
    • https://static.usrfiles.com/ugd/2d797c_12db663cdfbd44c895293da32e950715.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_off00005dfd.bin
160efb7057f1d37db9a581bd7979c7e67b29eb44ce59b93600ef6f684daf64cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFD 5268 bytes
font_01_sfnt_off00006fdd.bin
fbae0964abc800d0db5f5a0b5c9a9cc86b8a00c91c5b69d86918ca8c054d2c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDD 11692 bytes
font_02_sfnt_off00009574.bin
6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9574 16132 bytes

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