Malicious PDF — malware analysis report

Static analysis result for SHA-256 77900ecedb82e268…

MALICIOUS

PDF

53.4 KB Created: 2020-08-26 08:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36772d3c84818a85a58b4679a5eb4245 SHA-1: 52eec4a734791e20625883e89a6606f9344991a5 SHA-256: 77900ecedb82e26852af460e91d97d98eeb542209f6f4818b82bbf4af17a3e39
154 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains a query that suggests a lure to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm, likely for SEO poisoning or to obscure the malicious destination.

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=what+channel+is+starz+on+verizon
    • http://files.tennesseeheartwood.org/uploads/1/3/0/7/130739004/2c273605e8ae1.pdf
    • http://sonuv.bellacsanders.com/uploads/1/3/1/3/131380550/1893753.pdf
    • http://zogowi.scentsmithperfumery.com/uploads/1/3/0/7/130738847/74538c7e8.pdf
    • http://vewulopa.cypressofantioch.com/uploads/1/3/0/7/130775672/vozezu-todepazika-gapaguwiduj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/tunalo.pdf
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/xufugupuzivavukalo.pdf
    • https://cdn.shopify.com/s/files/1/0464/0522/2555/files/64440336328.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/tufomonet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/adobe_cs5._5_master_collection_serials.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/32431484051.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/numoben.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/waxapujepomovabot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/60495438555.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/50515999103.pdf
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/30606842233.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc9.bin
19ea6ef9caea6d5a336de9625c634834541f9b34e0de10094a6cdc7e26b38f77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 5012 bytes
font_01_sfnt_off00007ddc.bin
c6fd93b29c26afd0fd7ec3a679026dcfa883d7ad36f2180ab1fc85bd95091f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDC 16128 bytes
font_02_sfnt_off0000b028.bin
44344d777475bc27302cf71c6ce9e96b5edcb3cf6b8673c7cacff1863add0d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB028 16348 bytes

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