Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a60513d06580771…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 23:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0e8ec26f4ca68612d6265d1a072ee8 SHA-1: 31912b31968b72fac953ebf75bdd95d839257e45 SHA-256: 5a60513d06580771e62f0b8d1292922fd6dec7a328fb4b1899bb37c0f040df13
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm or redirection scheme. One prominent URL, 'https://ttraff.cc/pify?keyword=power+amp+pdf', is identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links supports the conclusion that this document is designed to lead users to potentially harmful 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/pify?keyword=power+amp+pdf
    • http://files.engineering-philosophy.com/uploads/1/3/1/4/131453733/3879338.pdf
    • http://files.ejacts.com/uploads/1/3/1/3/131384018/givebivusunilujogoj.pdf
    • http://files.josephdeansdesign.com/uploads/1/3/2/7/132712207/wevime.pdf
    • http://files.estellessweetitchblankets.com/uploads/1/3/1/4/131409170/tixavaxanepuluxuvit.pdf
    • http://gawopesif.nicoleedwardsauthor.com/uploads/1/3/1/4/131453215/67ca4cfe74c5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/4664/8473/files/genetic_variation_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/4334493361.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/71384193661.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/bojapogodomelafanazuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/6466954573.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/porevig.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/goanimate_comedy_world.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/76709415108.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/23075343542.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/91512183220.pdf
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/volejupelipuwunavoxenawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/ant_man_comics_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006644.bin
b92e6b66efcb2c3da1b151af2a742c3aad98a2c286c2bd1d9d8164f2d2518494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6644 5068 bytes
font_01_sfnt_off0000777d.bin
7eea67f97b9b744f7737a982b60fcd3905a642056a2b505b5d1120c96d6b102f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 10172 bytes

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