Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f29c269a82e9701…

MALICIOUS

PDF

47.8 KB Created: 2020-08-11 06:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccb723f9209723e693343835467923c4 SHA-1: e783215b1af55da003567be34f8f1f6587e88bd2 SHA-256: 1f29c269a82e9701c5dd1a55b2b7349f46ff18e0f331de7636ea8a8168e7ca7c
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to job applications and includes the malicious URL. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. The primary attack vector appears to be luring users to a malicious site via a deceptive document.

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/pify?keyword=professional+biodata+format+for+job+pdf
    • http://vebijazuf.supernaturallyparanormal.com/uploads/1/3/2/6/132681513/5499793.pdf
    • http://files.mhcs.me/uploads/1/3/0/7/130775652/fonuwidumajovuxa.pdf
    • http://files.ethansshop.com/uploads/1/3/2/6/132682239/1906246.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/increment_and_decrement_operators_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/26799677091.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9251/files/dosipit.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/connecting_networks_companion_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/universal_studios_map_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/95373865831.pdf
    • https://cdn.shopify.com/s/files/1/0435/2334/2495/files/fogutetesubozofa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8209/5517/files/r._danny_bot.pdf
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/vopijujataxasoma.pdf
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/spatial_join_postgres_points_polygons.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/vukebogibodako.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/soma_ark_simulation.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/diladodidutujafun.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_off00007054.bin
65164294fec0e6afe8d747a5d31e43eb6653c95680178a3ee6adb8359847197b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7054 5192 bytes
font_01_sfnt_off000081d2.bin
641a60d3f01ae1d0aa509458d04f3de261e36a54f1934f1bfaea352e781ffe16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 9768 bytes
font_02_sfnt_off0000a342.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA342 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.