Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca44a15a0d2c7f81…

MALICIOUS

PDF

46.2 KB Created: 2020-08-30 00:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 846aa36ab177c4d8db8dd48a4f7fc0a9 SHA-1: 3dd012b8e7eccfa40a6af9460b403e540ffc6a33 SHA-256: ca44a15a0d2c7f8114d1953fcb1f7f0c0516ab44e1e3e8c87547195dc15630ae
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.com/wix?keyword=coordenadas+de+puerto+rico, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to Puerto Rico coordinates and the wkhtmltopdf tool, suggesting a lure to disguise the malicious redirection. The primary attack pattern involves tricking the user into clicking the malicious link.

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=coordenadas+de+puerto+rico
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/tizaxutipevawuloki.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/8677426091.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/algebraic_expression_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/r_long_to_wide.pdf
    • https://cdn.shopify.com/s/files/1/0448/0257/2437/files/consumer_reports_zero_turn_mowers.pdf
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/induction_training_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/embryology_of_eye.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/learn_more_python_3_the_hard_way.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wozofedotomutigetipire.pdf
    • https://cdn.shopify.com/s/files/1/0454/1788/9960/files/julikedozakamuroruxosono.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/71726891600.pdf
    • https://static.usrfiles.com/ugd/b8c837_b77d207c14c04e569c7a4c6da3a3e7e2.pdf
    • https://static.usrfiles.com/ugd/93c935_f667f13238b640e7bf96fbaf168f5f3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b045058898184f6b8774cabba4cb35ba.pdf
    • https://static.usrfiles.com/ugd/79cb75_62b3394640ef4f2599c22935e82ec16a.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_off000059a0.bin
a2b30e94201c2eb032d931e8be88e4761f87e0637a10c83cc1ac45a83b8852bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x59A0 4940 bytes
font_01_sfnt_off00006a77.bin
096f0e1a9d3d4aeadf00332a7515c1a6f05b70f6ef92c77ded1fe3d07004bee4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A77 16396 bytes
font_02_sfnt_off00009c94.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C94 4324 bytes