Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ea93b0b21b4052…

MALICIOUS

PDF

39.9 KB Created: 2020-09-08 22:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b7a33408d885735fa3a61be1d86943 SHA-1: ad02ebd7ab72cd32a76b6418a635b9c7577ec894 SHA-256: b9ea93b0b21b405257f9a936f6854926a56221c2c1e8529cd47975756417e877
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic suggests the document is part of a larger SEO poisoning campaign to drive traffic to malicious sites. The embedded URL 'https://ttraff.me/pify?keyword=printable+maths+worksheets+for+preschoolers' is the primary indicator of the malicious redirect.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=printable+maths+worksheets+for+preschoolers
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/jonavexejapig.pdf
    • https://cdn.shopify.com/s/files/1/0446/8441/1033/files/khng_c_c_file_trn_outlook.pdf
    • https://cdn.shopify.com/s/files/1/0460/9802/2564/files/21358401610.pdf
    • https://static.usrfiles.com/ugd/87b9a8_6c157e9d95d441169716f273b9ce4b35.pdf
    • https://static.usrfiles.com/ugd/f6a907_e509b3dc955549d7aeccada67e84b3b7.pdf
    • https://static.usrfiles.com/ugd/8de238_89f2c01236534b4684e435fb1b21e35e.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/jopigumexiketufutedug.pdf
    • https://cdn.shopify.com/s/files/1/0441/0467/9576/files/basic_algebra_maths_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/48380812286.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5153/files/granny_chapter_two_mod_menu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/pomuv.pdf
    • https://static.usrfiles.com/ugd/ace02d_d9c323bcf28041c7b6110de79afc10be.pdf
    • https://static.usrfiles.com/ugd/ed8107_6b426ded637249b0a2c45dae80f7ff69.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_off00005ad3.bin
6053f4775e30f67f66ae114f165065436b5ef5a17128d26a1199398ff0de0bae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD3 5552 bytes
font_01_sfnt_off00006d96.bin
34b5ba52477422e123d631ed0d2ea0e57d89f74b5c5c67611b2755b4962b5a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D96 10764 bytes

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