Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d315fe51fe5607…

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 11:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66563c27fafe916883bb4bc0a1fa24b8 SHA-1: 5e856be246d7a500fc136e2dcc0a478f67c96848 SHA-256: e8d315fe51fe5607ff3986e5e0d7c25434e9738031d8e0c958d17aa409aa5dab
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one flagged by the redirector heuristic. This suggests the PDF is designed to trick users into visiting a malicious site, likely for further exploitation or malware delivery. No scripts were extracted from this sample.

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/wb?keyword=manual%20de%20enfermeria%20en%20cardiologia%20intervencionista%20y%20hemodinamia
    • http://files.nixageneralbaptist.com/uploads/1/3/1/8/131856129/nodalegot-pibupakude-rojoterupuw-vasedifowogivi.pdf
    • http://files.nothingeasylifestyle.com/uploads/1/3/1/8/131872198/wogukopubipetiwefa.pdf
    • http://files.aggressivehomeinspection.com/uploads/1/3/0/7/130776406/buzawive-wutivilifu-puzuwuvabug.pdf
    • http://files.shiningjdairygoats.com/uploads/1/3/2/7/132740951/02fb06af91.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/cephalometric_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/foxagatemeguxoxeveme.pdf
    • https://cdn.shopify.com/s/files/1/0428/6870/3398/files/local_anaesthetics.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/pejaxaxugomadepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/cell_biology_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0441/1041/3976/files/penodirofowegokiburepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9133/files/zameliguzepatepajibif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/timozibanogesasemorufuju.pdf
    • https://cdn.shopify.com/s/files/1/0438/4922/0256/files/bejurewonuvofomasop.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/41082691985.pdf
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/83538179321.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.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_off00006cc3.bin
cb52d9b955f59b8c15a2cf990e4447c9bc3b124708523e2a3440cbb51dcde18e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 5604 bytes
font_01_sfnt_off00007fb2.bin
f4fbbdbb4635cf10e1d24d6427bf103c150f9d12e25b8f6639320e4b2a56ee52
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB2 10964 bytes