Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9064f2cc385012…

MALICIOUS

PDF

52.9 KB Created: 2020-08-03 01:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dab31516fb690705f29f6be4f8dc9b79 SHA-1: 1034a20ae4161f8e31303e18000549b2aa5a4008 SHA-256: ca9064f2cc3850128b13a47298b909bfa0cdb80269e2ed955863e75ef77ed5af
130 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=discord+hyperlink+text', suggesting a lure to a phishing or malware distribution site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=discord+hyperlink+text
    • http://files.kitsuneillustrations.com/uploads/1/3/0/7/130775921/xixefosolasevob.pdf
    • http://files.grandjetedance.com/uploads/1/3/0/8/130873922/xezawimev_zoboduxivifi.pdf
    • http://files.jack-gaffney.com/uploads/1/3/1/4/131409309/lanunavo.pdf
    • http://files.straightfromtheheartinc.org/uploads/1/3/1/3/131380292/6666583.pdf
    • http://files.cifsf.org/uploads/1/3/1/4/131453432/d41d5a041c0a75.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5644/files/93842221778.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/27884815238.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/91051418164.pdf
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/matawupexejesiwila.pdf
    • https://cdn.shopify.com/s/files/1/0435/7901/5331/files/tokulivutibewumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/13673548574.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/sogufajunamegujidop.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/16627708117.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8932/files/tv_schedual_des_moines_iowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/90060108224.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/39921657098.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/judobupekija.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005774.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5774 6440 bytes
font_01_sfnt_off00006768.bin
db3f05b7237c15868861fdc8d1cccd95cb8430dd688a82ddd01488ef4dccb4d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6768 5184 bytes
font_02_sfnt_off0000790d.bin
3c7230620942ed69e953884aa6b1006170c9b76946d4031a42187ca23cfcef57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790D 3680 bytes
font_03_sfnt_off00008754.bin
56a18d1fa2c71f74bb94dc7fb2d9414a9a0eb9b729ae45e6f25f8ecc15ec661d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 11248 bytes
font_04_sfnt_off0000ad87.bin
45f1f53e4d7d4f4465db7f1ed5c5a970273672b715b29b10806c7b929e655a6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD87 17540 bytes

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