Malicious PDF — malware analysis report

Static analysis result for SHA-256 28409d8b362b7ba9…

MALICIOUS

PDF

48.7 KB Created: 2020-08-16 21:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4692ec52763598f06f6c51872f45a06 SHA-1: ce0729f540bd074fabdb63ee8f035f51f410cc8f SHA-256: 28409d8b362b7ba9c7fc1860127ea44a8098050e5608515d847e05b09dfc8ad9
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, disguised as a free template download. The primary malicious URL is ttraff.ru, which is known for redirecting to malicious content. The document body, though heavily corrupted, contains the lure text and the malicious URL. The presence of numerous PDF links and a redirector strongly suggests a phishing or scam attempt.

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=free+gantt+chart+template+for+mac+numbers
    • http://files.shannonvilledrags.com/uploads/1/3/0/7/130775108/jakegegowi_maxaxajudena.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/guxumunopevijusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9512/9254/files/christian_baby_names_with_meaning_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/33072880222.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0434/7605/8274/files/16377814797.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/dexesu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/46029347595.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/short_asvab_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/xulujosiwuxuzarax.pdf
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/careers_in_computer_science.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/badidife.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/37536084701.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f72.bin
f434f7dc93c8b2ed9c3515afce70e4982e1c481da50b77f304718f7c690aa844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 5524 bytes
font_01_sfnt_off00007205.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7205 1800 bytes
font_02_sfnt_off00007a92.bin
732eee573020d565136d681eae36444fcaec97d7c6a0e63dceabd0e910686335		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A92 11588 bytes
font_03_sfnt_off00009fb4.bin
36298d9b42482ef505b651e9545134b76438dad7e59d1f17d96a2cc3761d4b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB4 16304 bytes

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