Malicious PDF — malware analysis report

Static analysis result for SHA-256 38faefa9e4b5136a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 05:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a437ddf835e5598fb11bc21a4d9b001 SHA-1: 918f0d7447b4134401554dfe571fc272242aa1ce SHA-256: 38faefa9e4b5136a01e7f31449cacc683700c4c2e3799808b642cb270509b547
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'sklearn classification report recall' and the malicious URL. This suggests a lure to trick users into clicking the link, which then redirects 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.com/pify?keyword=sklearn+classification+report+recall
    • http://files.gracesnh.com/uploads/1/3/1/4/131438330/mebetaz_vevodaj_xesonojazipo.pdf
    • http://xiduzopo.silverfernflag.org/uploads/1/3/1/6/131607062/d44071.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/zujopor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/burning_love_season_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/88560600032.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/89721174812.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/victorious_april_fools_blank.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/kisuxazafugedan.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9383/files/cs_go_settings.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/gefanajijawulenuwogojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/jukadivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/29547654655.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/35237710281.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/vovupora.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_off000059fb.bin
4af83a6078a65ead94bc56837bfd95ac3704cdf9b7befe1da01edf4471efb05e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FB 5176 bytes
font_01_sfnt_off00006b9e.bin
2c1f746b7264451bcd9f6a5059aaad094e8df19b6a242bcc203237c1b7801e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9E 12728 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.