Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f26b38fd38c378…

MALICIOUS

PDF

41.4 KB Created: 2020-08-28 04:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfdaeb99397e446e83f52a211bcee3bc SHA-1: 8aba9d2887d6e39bd83bf4f0e0fd763dac594ae1 SHA-256: b2f26b38fd38c3788a3244a6203e440a04505bbec5277acb9980ea260c0af842
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, also contains this redirector URL and references to a 'Vax steam mop s7 leaking', suggesting a lure to entice users to click the malicious links. The presence of a link farm and a malicious redirector strongly indicates an attempt to lead users to a compromised site.

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.ru/pify?keyword=vax+steam+mop+s7+leaking
    • http://files.enricahandwoven.com/uploads/1/3/1/8/131856703/47a6c9901b.pdf
    • http://files.newworldparadigms.space/uploads/1/3/1/1/131164016/115fde50c776.pdf
    • http://sixidoxo.lisastory.org/uploads/1/3/2/6/132682347/lubutupozadodisitu.pdf
    • http://batobumi.workshoots.com/uploads/1/3/1/4/131438003/venunedalupomuneg.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/screen_video_capture_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/wezes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/french_orthography.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/wekow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4171/8426/files/59539952945.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/djmaza_audio_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/mexigamesimiravol.pdf
    • https://cdn.shopify.com/s/files/1/0454/5613/0200/files/53462944986.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_off0000638a.bin
3de302ba6acd9fb0cb822bb977c674d7695475323b277880983957645f24e6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 5220 bytes
font_01_sfnt_off00007558.bin
a980e45cd60754e7122976d3ead51f61913cffa57a673ff67c193c10695c0b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10476 bytes

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