Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63966550f7ed1f0…

MALICIOUS

PDF

40.7 KB Created: 2020-07-31 18:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a789ffc5ef31dc355c41091b94371f32 SHA-1: b0fbdad358a40bca688ee8b2bdeefe8357e14e4f SHA-256: b63966550f7ed1f08830c0e8eb61ee61dbde7de7cdd415aea82c978fd6570b3a
150 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one identified as a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=mac+mount+smb', suggests a lure related to macOS SMB mounting, potentially leading to a phishing or malware download page. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=mac+mount+smb
    • http://files.chelseyfitfactory.com/uploads/1/3/1/3/131383650/gejezutabixamo_jifidebiz_dewolewekalapa_zepedo.pdf
    • http://files.haskinsfamilyfarm.com/uploads/1/3/0/7/130775027/3575212.pdf
    • http://files.askthetutor.ca/uploads/1/3/1/4/131482884/wavidavutobap.pdf
    • http://files.clarionfootball.com/uploads/1/3/0/7/130740391/kesofinenafisugulef.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/44559886240.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/jamubalosow.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/jozuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/ronejawoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/6310120012.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/perowowatebid.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/dawigaroneberepese.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/diguruwelalake.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/rapoturabixut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/69832966889.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/35126859490.pdf
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/87939073689.pdf
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/forob.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_off0000608c.bin
43cdabcf5d29d07ba18adacf807ac9d0e864fa8b582a89ffc482fd6c4dbd2c88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 4960 bytes
font_01_sfnt_off00007166.bin
fdf256b2d42adbe83a0ae2ea35d2d8df74a34946be96544f831cde1a9d8091e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7166 10748 bytes

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