Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2983316da09743…

MALICIOUS

PDF

57.5 KB Created: 2020-08-29 00:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b35dbf210ba94d50cbe28a9d4dbb303 SHA-1: a0b248a76806ad83ea5f6fa41182fa23affc1b1f SHA-256: 0e2983316da09743c872a2711956563d0bbc165189657e247288cac56d1fa0b1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL identified is 'https://ttraff.cc/wix?keyword=micrometro+o+palmer', which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links, suggesting an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/wix?keyword=micrometro+o+palmer
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_99ba59804ab64eb4abdcbe0392892358.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bea4a461d9d497e95025f9ffc078a22.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/odometer_disclosure_statement_texas.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/62541351769.pdf
    • https://cdn.shopify.com/s/files/1/0457/8099/2166/files/c_g_t_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/august_2020_current_affairs_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fdd3a5c605f4d6ab4e58f6f2fa293d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0863faa061b443293b9a1a6ff43e43f.pdf
    • https://static.usrfiles.com/ugd/b8c837_399118f2549c40978629cf89fc0d8baf.pdf
    • https://static.usrfiles.com/ugd/b8c837_a869ed50d9514b0c9edd6909e39da331.pdf
    • https://static.usrfiles.com/ugd/b8c837_10972bc023f3423fa877927d8c2d2a12.pdf
    • https://cdn.shopify.com/s/files/1/0431/4605/1744/files/add_text_to_picture_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7642/files/59540277799.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/bladder_control_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/4246/3126/files/vasectomy_complications.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c4c.bin
0bef0f4a50ef952f5c54ba6a307759ceb950b7b6bca4026bc57ff349d6502464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4C 4588 bytes
font_01_sfnt_off00009bd6.bin
b3027539a4b9919ca7a81725570c15965dcf1078e680da5fc15cb9f8e2a4d759		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD6 15228 bytes
font_02_sfnt_off0000c9a0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A0 4324 bytes

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