Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a75346de3785ee…

MALICIOUS

PDF

57.0 KB Created: 2020-08-29 15:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd4a03be72680aadc9e164547c3e520e SHA-1: d3d5c679b971708a292b8ed02ed895052731eee0 SHA-256: d3a75346de3785ee1c6ac861b2c8b7fb1437269d21e049dd6ed07d05c3d60f12
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=cs+1.6+iceworld+indir+gezginler'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file is also flagged by an ML classifier as malicious. The overall pattern suggests a phishing attempt disguised as a download link.

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.com/wix?keyword=cs+1.6+iceworld+indir+gezginler
    • https://static.usrfiles.com/ugd/b8c837_a5d7dc1cfffc4c32bd88f0a002258f45.pdf
    • https://static.usrfiles.com/ugd/b8c837_58cb417fc5a44158927dfaadcf54042e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cd9aa6b21b14e98aed75f44e3f86962.pdf
    • https://static.usrfiles.com/ugd/b8c837_27a1d5dae6d6492e9c161aa61f94b069.pdf
    • https://static.usrfiles.com/ugd/b8c837_be0ec9187d7547169cc924ad384d5531.pdf
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/89900795340.pdf
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/afrique_berceau_de_l_humanit_dissertation.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/autopsy_report_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0432/8554/5124/files/dupawonurigodarudakabibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/19145227645.pdf
    • https://cdn.shopify.com/s/files/1/0433/7251/1386/files/caslon_ttf_free.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_off00007c05.bin
7a20cf8caaa240ea917a0555c6ea0c2477f9ab35a37fdd5bb401f73fc6f7ffcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C05 5184 bytes
font_01_sfnt_off00008dd5.bin
f378cd5a0729b66eae4b74d7aa9aa831cb17d8a26460e8309ae19fd84770b185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD5 16876 bytes
font_02_sfnt_off0000bf1c.bin
69d723212eb6dd1954cef9b4649bd4df6eb17a6f495b2db8137d34beed6776af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1C 16332 bytes

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