Malicious PDF — malware analysis report

Static analysis result for SHA-256 982cbff7f8c692e1…

MALICIOUS

PDF

96.2 KB Created: 2020-08-29 17:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2934e4d82ba25a1667d004d77669aa9 SHA-1: 290fa30b7170327efddde7487f114e9632267a02 SHA-256: 982cbff7f8c692e1d525390769c70c192785062855e33ffa68e1ac35cae545da
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with keywords related to LDS.org and the Book of Mormon. This suggests a phishing or social engineering attempt to direct users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=lds.org+book+of+mormon
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/tanaxofanomo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3107/5743/files/dimavoxitemipe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/ncert_math_book_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/1959/9004/files/78916995043.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/losing_my_mind_sondheim_sheet_music.pdf
    • https://static.usrfiles.com/ugd/362633_26fec0a010584a45937c64527bd7a5c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b98fd1e34704383a5e9351bad775e9f.pdf
    • https://static.usrfiles.com/ugd/e3ff21_0af697da030240ddb096629ba61c5ab1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3382137978224093a2596f2a0e44a9c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_e31ddc96d9e74001a29a6b804284a459.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/21050081648.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/75537017529.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8720/files/83458340217.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/kiroxoxugosuxuped.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2184/files/beginner_guitar_tabs.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_off00013bbe.bin
734c9862837f150408449850a885400d988785b45be9e8c9c749f1c4fd338fe9
pdf-font-stream PDF embedded font (sfnt) at offset 0x13BBE 5160 bytes
font_01_sfnt_off00014d4a.bin
12fa1931232ae746f7ebb8f93e2fcbf0cac3caabc7e7893f0bccb34aa56616d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x14D4A 11540 bytes