Malicious PDF — malware analysis report

Static analysis result for SHA-256 3176ec82da0bfe87…

MALICIOUS

PDF

41.2 KB Created: 2020-08-29 23:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56e814584aac2fc011b048dd3b034da6 SHA-1: e28ecc52767d33765e6e22ecd50d386c79c37444 SHA-256: 3176ec82da0bfe879820945b9d1b18bf285db97998c297d2ffac1d3a9760655a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=student+guide+to+the+frog+dissection'. This URL is likely part of a phishing or malware distribution scheme. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a network of linked documents. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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.cc/wix?keyword=student+guide+to+the+frog+dissection
    • https://static.usrfiles.com/ugd/b8c837_e539bbfe78914fbab4a9c90ac0b02868.pdf
    • https://static.usrfiles.com/ugd/b8c837_4646e54ddc0649e38460ee08418bcde8.pdf
    • https://static.usrfiles.com/ugd/83f04e_805ac061bfd64863ab18437dd8e41a21.pdf
    • https://static.usrfiles.com/ugd/a467d2_196a5e2a8db94a8abe0e2f93a68e6459.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1c71de0f6774347905c42513b28b317.pdf
    • https://static.usrfiles.com/ugd/078c79_578bc39dac8e48f4808765445f4c6b58.pdf
    • https://static.usrfiles.com/ugd/f80014_c08dc273d0eb4aa29f6d8ed5992920c7.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_01af0b16759f4e0e967cb02212f781a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_f50b206fa1be453daddc425694672898.pdf
    • https://cdn.shopify.com/s/files/1/0433/9594/0519/files/97513494885.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/encyclopedia_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/zotiwubizozozomepuzupo.pdf
    • https://cdn.shopify.com/s/files/1/0453/6093/9163/files/sotegumapelanazagot.pdf
    • https://cdn.shopify.com/s/files/1/0436/2780/6883/files/90560098096.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_off00006444.bin
d7050c62a0234982c0fafbf4ab1fc8c65758502ffbd34af40069ab85d41c5fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6444 5144 bytes
font_01_sfnt_off000075bc.bin
47e1ad01dd3e16d632ba71c4ac94a5af8ddb9340bbc199982fc3b4250e7cfc46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 10036 bytes

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