Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69bd0812651fa48…

MALICIOUS

PDF

39.2 KB Created: 2020-07-27 04:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18a2c6dcf290705c9475273a1beba668 SHA-1: 6dcf9c80d38f9d20d54682729fbcbee83a5668f0 SHA-256: d69bd0812651fa484466ca4a3c4cf7c7be412745931c49ea3c56501ff1c29166
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious infrastructure under the guise of providing movie 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/pify?keyword=axl+tamil+dubbed+full+movie
    • http://files.footloosesalsa.com/uploads/1/3/0/7/130776123/lawota.pdf
    • http://files.asthecrowfliesquiltshop.com/uploads/1/3/1/4/131406537/9254178.pdf
    • http://files.503512136382517917.com/uploads/1/3/1/3/131398487/7585784.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9622/files/48931605844.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/70431068082.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8717/files/tovuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/37311751382.pdf
    • https://cdn.shopify.com/s/files/1/0431/7685/3664/files/44079485718.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/51543699000.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/93481618776.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5832/files/61257257279.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdf
    • https://cdn.shopify.com/s/files/1/0440/2947/7014/files/86833140112.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/kulijasakidag.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/loromisipulusajilelegefux.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/kikari.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/
    • https://cdn.shopify.com/s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c81.bin
d48841ee89ca44e8a0c2cf95c6cc5ca376a00a283ba3d3e93e2362a66c304180
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C81 4812 bytes
font_01_sfnt_off00006cef.bin
94251ffa2efcd5d66808afa2690d0a439daa4e564e5b7826139ec09e1d4faeaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 10208 bytes