Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ebe0288838a2da…

MALICIOUS

PDF

58.7 KB Created: 2020-08-11 19:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b67f551672e1a5084d1b14c0b0a8bad9 SHA-1: 0b72cc02c6d3d7ec5eea00c936f1942cde2e8873 SHA-256: d3ebe0288838a2da4df1c7f65bbad8d7938d1a98edaa7f4c2e600f95516b6fb8
150 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm, likely for SEO poisoning or to distribute malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. The primary IOC is the malicious redirector URL.

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.ru/pify?keyword=titrasi+redoks+permanganometri+pdf
    • http://files.overcastvapors.com/uploads/1/3/1/3/131381259/jakewatezawajak.pdf
    • http://files.hijackingfieldtrips.com/uploads/1/3/2/7/132740564/gimobuf.pdf
    • http://files.philipcleaning.com/uploads/1/3/1/4/131406075/75e25.pdf
    • https://cdn.shopify.com/s/files/1/0439/2304/6568/files/61588998922.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/speech_to_text_google.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/92486208575.pdf
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/nda_general_ability_test_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1569/files/cognitive_bias_codex_with_definitions.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/24164374776.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/52387641586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8045/8144/files/95042496472.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/eastern_sun_diablo_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/73386027033.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_off00009936.bin
06d7644a749d58f32a345cc1f80a7e2b18a1448c274aa8f90e37b21a91af7f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9936 5128 bytes
font_01_sfnt_off0000aa8f.bin
9b1e6cc70bd0e6894de2a796fefac4ed3c79c8334c5b40cbe47218e03a7f6e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8F 10404 bytes
font_02_sfnt_off0000cde5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE5 4324 bytes

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