Malicious PDF — malware analysis report

Static analysis result for SHA-256 992e30c91dcf3a5c…

MALICIOUS

PDF

45.2 KB Created: 2020-09-12 17:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00b4db2922814403eb6ca900fdb4f53a SHA-1: 0abe333f891994f50c7b907982c5e91f12c38043 SHA-256: 992e30c91dcf3a5c023b3b6d7cc7bfa8087797405dac667ee24fba47507410f8
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.link'. This indicates a phishing or redirection attempt, likely to deliver a malicious payload or lead the user to a fraudulent site. The document body, though heavily obfuscated, contains the same URLs, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=keynote+templates+for+business+presentations
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/pubejegilani.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/luvedutebomufi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/zovonolabikozazutul.pdf
    • https://static.usrfiles.com/ugd/136d3d_1d92a01687bb4e3991b3b03f2b57e80c.pdf
    • https://static.usrfiles.com/ugd/d4da64_9f9ca7f15d3e4932ac7a445026761de0.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/78393222246.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/xefamivawawani.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4105/files/what_is_a_pci_device.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/volibiferow.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/best_free_movie_and_tv_show_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3709/0211/files/78082011785.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/attendance_sheet_for_school.pdf
    • https://cdn.shopify.com/s/files/1/0437/0160/0411/files/11-_3_practice_problems_limiting_reactants_answers.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_off0000623e.bin
f118232bfe500a6633678d794988230a4480133b2aa04526694f224d68d38848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 5140 bytes
font_01_sfnt_off000073a5.bin
7b1054d9d494d38f714e84869d9593e69647b0a532fe2a67c8a00dde2c486a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 11352 bytes
font_02_sfnt_off000099af.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99AF 4324 bytes

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