Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6056af43a5483c…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 04:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed10296399a7179df7c5de400a1766b4 SHA-1: 5883fd4db439e4f1774f21a3d5d841e48f597520 SHA-256: cf6056af43a5483c2a7029df99325bd1315734450e71f081135e7eccaa0378ff
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an advance-fee scam lure, indicating it presents a fake lottery or prize. It also contains a critical heuristic for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=lg+v30+android+9', reinforcing the lure. The PDF also hosts a large number of external links, many pointing to 'static.usrfiles.com', which is flagged as a link farm.

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.com/wix?keyword=lg+v30+android+9
    • https://static.usrfiles.com/ugd/0d2908_7e28a753925c428baed562ae29a60a0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9b5b2caf0be4bbaab81fbee9d877294.pdf
    • https://static.usrfiles.com/ugd/b8c837_beba4432736d44e8bebca1d18845bce3.pdf
    • https://static.usrfiles.com/ugd/b13fd1_8ba3d735bb7b448a94e186480ac7f01e.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_191cc6e6a62249b08047b8e0ec7bab39.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.pdf
    • https://static.usrfiles.com/ugd/df4650_862a5e94728948ada3be13cb29ea1169.pdf
    • https://static.usrfiles.com/ugd/76156b_d889e25f7a05470f9ff7bc95bd925146.pdf
    • https://static.usrfiles.com/ugd/ac72e0_b199764448134557a3906f6094fd01b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_dab5dad5c154444baac3490c4848d38d.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccae4a17a7f04627bd4f1000765c3305.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8a3b5f26b1c43e3b0c78f03e4a0e224.pdf
    • https://static.usrfiles.com/ugd/b8c837_40fac45572904770b6423b61e4f8c578.pdf
    • https://cdn.shopify.com/s/files/1/0436/2302/2752/files/bengali_movie_shikari_full_hd.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/xewise.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_off00006fdc.bin
30dd55ea697ed75d2ee5e4c892fcb90fe4f0a5f986ddf1e8e8b326cbd7d31659
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDC 4836 bytes
font_01_sfnt_off00008049.bin
a3fff233662fa735b906dddf436c6cf4b422f5dbf08ce4bf062a1cde315480a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 10960 bytes
font_02_sfnt_off0000a59a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA59A 4324 bytes