Malicious PDF — malware analysis report

Static analysis result for SHA-256 d379ab6f1668e236…

MALICIOUS

PDF

42.4 KB Created: 2020-09-07 05:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be72e3c4efe41a332c73736bc42182f6 SHA-1: 97705324802e79a15640e8417071939a9c16eab1 SHA-256: d379ab6f1668e23670628675dfeead79e7894671aa42c000d7b482e5a6e2525d
150 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'June calendar template cute' and the malicious URL. This suggests a social engineering attack aiming to redirect users to malicious content.

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.me/wix?keyword=june+calendar+template+cute
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/tokanonurizupem.pdf
    • https://cdn.shopify.com/s/files/1/0435/4274/1143/files/portland_weather_underground.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/64433826291.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/bryan_adams_song_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/8577/5519/files/zigumofunavit.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/sifibazinujufodudixoja.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/kaththi_full_movie_hd_in_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0165/9043/files/99658031952.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vepotarinaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/jubup.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/dclaration_sur_l_honneur_assr2.pdf
    • https://static.usrfiles.com/ugd/37428b_907348310ce341819530a167fd97813b.pdf
    • https://static.usrfiles.com/ugd/136d07_adce639010834e2986dc83c1128384fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_b42e3caae41f4ed29fa47b2e6b09220b.pdf
    • https://static.usrfiles.com/ugd/9421c8_2e7aaba511914b2facc61dea8749202e.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfe2ad1adfcd4f928cdced644920cae8.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_off00006889.bin
765abf576a3d8a70a18717c7c25a4d8b905ac2a315be527da09bfcbe1313b756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6889 5028 bytes
font_01_sfnt_off00007987.bin
c5ede1a894ee5ba321ee215ff1e0c88515f0dadf80914c9b67259338cf524fae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7987 10436 bytes

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