Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6a8d0c7a4d45d3…

MALICIOUS

PDF

37.6 KB Created: 2020-08-22 16:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9c26484f00f21952667e01def48d209 SHA-1: be43d6196a6855d149c53d91f0eeea33050f5a84 SHA-256: 2f6a8d0c7a4d45d3c563e42c41f932dfde9ff24144a5ba6a7a6190595d0a435c
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) or potentially malicious PDF files. The document body, though heavily obfuscated, contains text related to search terms and file names, suggesting a lure to trick users into clicking these links. The ML classifier strongly indicates malicious intent, and the presence of a redirector URL is a high-priority indicator.

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=char+broil+performance+tru+infrared+parts
    • http://files.zaratelabs.com/uploads/1/3/0/8/130874064/wigajiba-tobemexog-mamesidujome.pdf
    • https://cdn.shopify.com/s/files/1/0437/5999/2990/files/xiaomi_redmi_2.pdf
    • https://cdn.shopify.com/s/files/1/0447/0842/9977/files/chemistry_grade_12_nelson_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/abelian_group_in_discrete_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/crossfire_ph_manual_patch_forum.pdf
    • https://cdn.shopify.com/s/files/1/0430/7582/9911/files/fixed_header_html_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/nisizim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/rejurikodixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/42156082379.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_off000051f7.bin
6d8c1b7eadd8a9063e340bd6f89c26a485f01bebfb3c6ed74c5fbaf42f0eed5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F7 5440 bytes
font_01_sfnt_off00006448.bin
d0afa87b7875588df5b552f6f261cb9bb5ff01fe285b0804f25ac0a98b884e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 10612 bytes

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