Malicious PDF — malware analysis report

Static analysis result for SHA-256 217fdb382e721fdc…

MALICIOUS

PDF

44.8 KB Created: 2020-09-02 06:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06862ba25a79874313ccdf88d636d04b SHA-1: df85ecbef4125c13dc2b7ed356538116f90d3075 SHA-256: 217fdb382e721fdc6bc7981eab59669e51a35d81aab59a58b734692487cf27da
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains multiple heuristic firings indicating malicious intent. Specifically, it includes a PDF link farm with numerous external links, one of which points to a known malicious redirector. The primary malicious URL identified is https://ttraff.club/pify?keyword=lateral+thinking+puzzle+microwave+answer, which is likely used to direct users to a phishing or malware-hosting site. The document body, though heavily obfuscated, also contains this URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/pify?keyword=lateral+thinking+puzzle+microwave+answer
    • https://cdn.shopify.com/s/files/1/0433/0323/9840/files/28634468948.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/zinon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/zavigerufofo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6031/2741/files/fusionner_fichiers_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/0800/7072/files/pewosuxusafefakeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/billboard_hot_100_rar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/92465302674.pdf
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/levupiwe.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/silence_crab_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/zexusexesugepana.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/18637823272.pdf
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/elan_chalon_basket_centre_de_formation.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/xujodobevupumosatiwimova.pdf
    • https://static.usrfiles.com/ugd/3826db_382b0159e28943cdaced96bdaff7217e.pdf
    • https://static.usrfiles.com/ugd/b8c837_27e5746e514149d78c5df84dd31daff6.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_8ac40a6a8f334981968f60f8e1920614.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c88fd91eb284196bf4a88e69f2587c6.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_off00006265.bin
352a08f4f7fcfe4d2772beff17bc17ccc53649b3950261953b5585c201aaa250
pdf-font-stream PDF embedded font (sfnt) at offset 0x6265 5436 bytes
font_01_sfnt_off000074d5.bin
c9dc221931109ff57f2ba27d53950d75cb08d44fe494d0bd8b9a24b199553070
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D5 10200 bytes
font_02_sfnt_off000097c2.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x97C2 4324 bytes