Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc00ecaa34055335…

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 06:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2325789ecca7554546d218ca237c7d8e SHA-1: 63dbcd72c08af4dd29bf8ed858abb6ef9caa627c SHA-256: dc00ecaa340553359d736e4ec3b51009939b2760d0ee62d8670125f640fdedc5
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links, characteristic of a link farm or SEO spam campaign. One of these links, 'https://ttraff.com/wix?keyword=timex+indiglo+watch+directions', is identified as a malicious redirector. The document body contains garbled text along with metadata and the identified malicious URL, suggesting it's designed to lure users into clicking malicious links rather than providing legitimate 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.com/wix?keyword=timex+indiglo+watch+directions
    • https://static.usrfiles.com/ugd/e8506d_ab5125286c04468f8b5d3e197129cce1.pdf
    • https://static.usrfiles.com/ugd/b910ae_5515a7a577c54cf8b29c53882536e555.pdf
    • https://static.usrfiles.com/ugd/3f80ec_91ba49563fc94bf9a535d718646eb8df.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/xml_formatter_vs_code.pdf
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/adjusting_entries_practice_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/46802771731.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef4d5570666d472f95499c01eed5264e.pdf
    • https://static.usrfiles.com/ugd/51c472_3148683677fe42e5b80c852414a772c6.pdf
    • https://static.usrfiles.com/ugd/625844_9a81081676a74ce782e484cab726da74.pdf
    • https://static.usrfiles.com/ugd/ab059d_5ffb3abd0bb04b498976e1019c51829d.pdf
    • https://static.usrfiles.com/ugd/60933b_926256ca2fb8483cb6831976136ec9e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8c4c6b8ac9e40a89c928cd2f02856af.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_off000072e9.bin
e2b48da9847ba230f6ba0939c426039db5d5724b81790b4b78c14e4d71019107
pdf-font-stream PDF embedded font (sfnt) at offset 0x72E9 5460 bytes
font_01_sfnt_off0000855c.bin
37da72b57f0e8eceb4207b3b5ed35f03bec001e09c066ef0ab2c07cbd24d4327
pdf-font-stream PDF embedded font (sfnt) at offset 0x855C 11336 bytes