Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69bc96d562aa5a3…

MALICIOUS

PDF

36.5 KB Created: 2020-09-01 05:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38a99e7d43513e07ca217ef57c9892d3 SHA-1: 1c3e181d85d4db76ce68fe3e2d0bea6076214cd5 SHA-256: e69bc96d562aa5a35312518a4273822d9202ffcc021683e63b6d26faf7eaee39
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a mass external link farm, with many links pointing to PDF files hosted on various domains. The primary malicious URL, https://ttraff.com/wix?keyword=chaahat+full+movie++foumovies, is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is intended to lure users into clicking it for malicious purposes, likely to download further malware or engage in phishing. 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.com/wix?keyword=chaahat+full+movie++foumovies
    • https://static.usrfiles.com/ugd/7e0eb0_3c7e7d9451004be2a7105e79663385f4.pdf
    • https://static.usrfiles.com/ugd/b4609a_a72e542da3234c6a977657549b54d2a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cbffd95719a48abb4eb29ecff715736.pdf
    • https://static.usrfiles.com/ugd/5926b4_d688f59705134905a4d409f3887a11d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_f166e2c1d215496f9fdefdc1a5be1c93.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/326961755.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/88786456986.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/44106004967.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/sovovesawanutavoliwemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/nijosuletigagidobifefar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/sijariranekosurusinube.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/1358188799.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0285/files/neletamopokudogazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/gobatimigupipa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/rozefov.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_off000050ae.bin
20f7c01391ddb12f010ad2b45daa8caa740d364bfeaaf6f04b060f813c89a1bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x50AE 4876 bytes
font_01_sfnt_off00006127.bin
29210db6ebe584eda2ff60ec6b014b27de77ddc68f8a54370774c3af9da28007
pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 10824 bytes