Malicious PDF — malware analysis report

Static analysis result for SHA-256 888cbe74d0650069…

MALICIOUS

PDF

55.0 KB Created: 2020-09-10 05:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640387d020ff768e997280c76adf4da2 SHA-1: 22fbc1f413165024123dbff247d55f31a041e56a SHA-256: 888cbe74d06500698d9f5b3c38cc0cd1fc4731dd6148eeaeadcfd3acb361e3f4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=piramide+alimenticia+2019+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with numerous external PDF links hosted on static.usrfiles.com. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect users to malicious content.

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.link/pify?keyword=piramide+alimenticia+2019+pdf
    • https://static.us
    • https://static.usrfiles.com/ugd/12dc78_2ad2b586b33f45ce9823e6716e59f4b1.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_df062aad77654490934ba96df65180f0.pdf
    • https://static.usrfiles.com/ugd/843280_a47ee7d7bf4c468e863f6578f82c082b.pdf
    • https://static.usrfiles.com/ugd/3d0627_379604392b34401b8f5dbb0f33343a6f.pdf
    • https://static.usrfiles.com/ugd/e56fe2_9a72222d487744fe9a097efb9679f92f.pdf
    • https://static.usrfiles.com/ugd/08fe48_3e11ead9f3f94972b3820ebbc627a1fa.pdf
    • https://static.usrfiles.com/ugd/4b68be_9a7ad4e2a230412ba75202964935e042.pdf
    • https://static.usrfiles.com/ugd/7b00a0_f670aaf6c2234936bdb9748a4da58c1e.pdf
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/vuniniduvokew.pdf
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/struts_tutorial_for_beginners_with_examples_in_eclipse.pdf
    • https://cdn.shopify.com/s/files/1/0441/1647/6056/files/pupedowus.pdf
    • https://cdn.shopify.com/s/files/1/0437/4442/8181/files/bebose.pdf
    • https://cdn.shopify.com/s/files/1/0433/8548/7516/files/river_basin_development_authority.pdf
    • https://cdn.shopify.com/s/files/1/0468/0387/8039/files/reheat_honey_baked_ham_turkey_breast.pdf
    • https://cdn.shopify.com/s/files/1/0439/1161/0520/files/study_abroad_packing_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/67881461673.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_off0000981a.bin
1f2907f73b171eaee72d1a4aee83569f28975893bd674d5d6a675dc4cc9baf0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x981A 5608 bytes
font_01_sfnt_off0000ab17.bin
2356bedd0ac3cc74f0fb14fadc316eb2f024ef90cf4e8e8c031d3b2f7304f50d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB17 10504 bytes

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