Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e2ff15a642d3ca…

MALICIOUS

PDF

43.2 KB Created: 2020-09-07 00:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ea401848e5d8e932e59a06b5822f145 SHA-1: 204e05cfc4345550c5d5d2587681da74266ae2b0 SHA-256: b9e2ff15a642d3ca5e10b2173c92acef2b1a633ad9f0f099c297ce8eb120a3cf
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. This URL is presented to the user as a free worksheet, indicating a social engineering lure. The document also contains a large number of embedded links, many of which are to Shopify, likely to appear legitimate, but one critical link leads to malicious infrastructure.

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.me/wix?keyword=polar+coordinates+free+worksheet
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/estrategias_de_aprendizaje_colaborativo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/ceiling_speaker_placement_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/wotirimixipogotive.pdf
    • https://static.usrfiles.com/ugd/0f5b72_451a8c46ca4a4aa8b25da4d0caa0db94.pdf
    • https://static.usrfiles.com/ugd/f9d4cd_8da831cbe7ae460d83e0c9c944a86494.pdf
    • https://static.usrfiles.com/ugd/0adedf_c1d465f2e3da4e22a6baed1edebc1038.pdf
    • https://static.usrfiles.com/ugd/9cb927_247ef04d3e2940c59ca2b3536425a0e3.pdf
    • https://cdn.shopify.com/s/files/1/0450/9509/2376/files/taylor_introduction_to_error_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/1700352194.pdf
    • https://cdn.shopify.com/s/files/1/0437/2843/7409/files/wibogasupatetowi.pdf
    • https://cdn.shopify.com/s/files/1/0465/1204/6230/files/madalin_giorgetta_fitness_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/45032897386.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/14038392622.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/online_business_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/gizaxob.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/ark_extinction_artifacts.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_off00005df3.bin
0742b5e11e444d37d2dc40fb375eff2b70e836f7aa253d52fb57ed41295cfc63
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF3 5056 bytes
font_01_sfnt_off00006f21.bin
789990a4ad10ffa1a8d26292f61fc60be4bc0dc192b0ebd892912d458488ec5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F21 10120 bytes
font_02_sfnt_off000091d5.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x91D5 4324 bytes