Malicious PDF — malware analysis report

Static analysis result for SHA-256 2924075911dfa9b6…

MALICIOUS

PDF

56.7 KB Created: 2020-08-06 20:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02db57b17de9d921e370df5d1ec3eddf SHA-1: 2c2493771210c30ff5f6890a1c6c9c273d264353 SHA-256: 2924075911dfa9b663d7c1ea94b23a7ed9d20ad0148aece0aa0913ac31d81f59
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ancient+history+by+rs+sharma+old+ncert+pdf' which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites under the guise of providing a PDF document.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ancient+history+by+rs+sharma+old+ncert+pdf
    • http://files.wcsinstruction.net/uploads/1/3/1/4/131453276/jirapeluguteta-rugopexadewelob-lufepew.pdf
    • http://files.mralder.com/uploads/1/3/0/9/130969855/sideganojufaze_xukitusas_faxabuxovi.pdf
    • http://files.yangmian.net/uploads/1/3/1/4/131453615/dedix.pdf
    • http://files.silverlake-designs.com/uploads/1/3/1/4/131437307/falopexutow.pdf
    • http://files.lwwmusic.org/uploads/1/3/2/7/132712093/b424518f238.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/soduxeveto.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/12610127667.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/81295912327.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2168/files/jenilojuminafolugatavomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/81248207214.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/66213333539.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/budekidif.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/behavioral_approach_in_international_relations.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/wesedufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/system_of_a_down_chop_suey_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/32693089247.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081ee.bin
c5f941a64a9421f3d1ae889c9506f04b8fbd73f400fb040da6788ab42b9c7640
pdf-font-stream PDF embedded font (sfnt) at offset 0x81EE 5628 bytes
font_01_sfnt_off000094ec.bin
77ada5a0460e367f47279f746dda3af677f89b52c34e8bf1036eacd72e012262
pdf-font-stream PDF embedded font (sfnt) at offset 0x94EC 13388 bytes
font_02_sfnt_off0000bfb4.bin
7e0863d6dcdfe3ce59f67395a06e5e8634226e44f713773c85e494ff6d119ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB4 16344 bytes