Malicious PDF — malware analysis report

Static analysis result for SHA-256 929237011bbe000c…

MALICIOUS

PDF

35.2 KB Created: 2020-08-31 04:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2071f58559704efc40d5eec665a4555 SHA-1: f4872a130a256b3fc86d23f4d2610b44eab05cdf SHA-256: 929237011bbe000ca14de504af6674fff45630723eb6a0ad64ffb6172bccd901
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to "Intelli vent error codes" and references the malicious URL, suggesting a lure to trick the user into clicking the link. The presence of numerous other PDF links, many pointing to static.usrfiles.com, indicates a link farm strategy, further supporting the malicious intent.

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.com/wix?keyword=intelli+vent+error+codes
    • https://static.usrfiles.com/ugd/b8c837_809268f63d4f4e25bc8ca7711807b741.pdf
    • https://static.usrfiles.com/ugd/b8c837_6542bf75d93e4f9884e5f9a695438c2a.pdf
    • https://static.usrfiles.com/ugd/26481d_36dec261e9f446999149d24f5c271618.pdf
    • https://static.usrfiles.com/ugd/ade4e6_cd27f4c1b3d44f9486b9502019eb4291.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8901/files/17752372308.pdf
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/pagaxikudatamawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/83007247902.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/aol_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/film_the_abcs_of_death_2012.pdf
    • https://static.usrfiles.com/ugd/cc03df_06a29af1ca1a41fc8cd45e7d0fed40e2.pdf
    • https://static.usrfiles.com/ugd/e42ee3_419438a5571942599397768670dace55.pdf
    • https://static.usrfiles.com/ugd/91e123_8e5c4eff101c42fe94eae9b39f6de3d0.pdf
    • https://static.usrfiles.com/ugd/12daa7_680224df422c4f1e884745bfee96710a.pdf
    • https://static.usrfiles.com/ugd/b8c837_baae777784bb4397a14ffd8809009b05.pdf
    • https://static.usrfiles.com/ugd/909b15_805103502f5f40fb8d3fc8e22d78c26e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2de4f61e230b4eeb8bfdccea37108081.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e3272093a2246d1b0fe2b1954061fba.pdf
    • https://static.usrfiles.com/ugd/724fb5_33306027fbd3434c988cf6d3545171d6.pdf
    • https://static.usrfiles.com/ugd/909b15_e015c6fe7da34b4e9e97b5b2c546f3cf.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_off00004d3e.bin
95cb9baaee851402ea0ea655373160d45a0514db5c0e33c22ec218e7402bb28d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3E 4720 bytes
font_01_sfnt_off00005d58.bin
db9c7339e76817c9d78b74ac294098b3d27e9cd5665fd5e042dc17e528dc534c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D58 10364 bytes