Malicious PDF — malware analysis report

Static analysis result for SHA-256 64946ef5e1dce957…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 21:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 187fbb54ad5331b0847064c236559344 SHA-1: fce7dea1c36363e3854aa12850d1b458f44b703a SHA-256: 64946ef5e1dce9575159912f70cff28200cc5ba9f96bc7c3d61d2b13a3e3c1bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded links suggest a phishing or scam attempt, aiming to lure users to malicious sites. No scripts were extracted, and the document body was heavily obfuscated.

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=blade+trinity+soundtrack
    • http://files.clevelandpropshop.com/uploads/1/3/1/4/131438680/koteful-nojesamekemuvok-loniteder.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/4458/0002/files/ayyappan_songs_free_download_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/16269126119.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/gugofosiselavekovimegin.pdf
    • https://cdn.shopify.com/s/files/1/0463/2513/7563/files/garavadogaturob.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6711/files/91486218108.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6668/files/33402889469.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/43771815387.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/fexuzes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/fletching_guide_osrs_efficient.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_off000061a8.bin
f7c5e44d74421fb1931aa09111e8b9db4f2ca06fea5f5189ce2425a221d925db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 5148 bytes
font_01_sfnt_off0000733a.bin
be4945e25a0b9559218e37050e1dc7fd97d3e5ce5b18e4163151847964332883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733A 10232 bytes

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