Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d728b9494d99c3a…

MALICIOUS

PDF

73.5 KB Created: 2020-06-05 05:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65aa2b6ac0c61772571c7200e7698319 SHA-1: 1c560bb9881a4d758f277acb61f209039168aaac SHA-256: 8d728b9494d99c3ad1b4ea1cc7dd4c4eabfb69a021d2cda882a3179ce86e99ac
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to domains that appear to be part of a link farm. The document body mentions 'Bobble keyboard apk old version', suggesting a lure for users searching for specific software. The primary attack pattern involves directing users to a network of potentially malicious websites.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://ngabwe.com/uploads/1/3/0/6/130620618/130620618.html#bobble+keyboard+apk+old+version
    • http://drpaigepaulson.com/uploads/1/3/1/8/131871614/7b497af78811ce.pdf
    • http://wlptax.com/uploads/1/3/0/3/130323319/lerodo.pdf
    • http://bqpainting.net/uploads/1/3/1/0/131070010/473038.pdf
    • http://marketingcowboys.co.nz/uploads/1/3/1/4/131437161/4824223.pdf
    • http://journeykouture.com/uploads/1/3/0/2/130272488/nerus.pdf
    • http://sandiegocoparents.com/uploads/1/3/0/7/130776519/galogavov_jogomo.pdf
    • http://ngabwe.com/uploads/1/3/0/6/130620618/terms.html
    • http://ngabwe.com/uploads/1/3/0/6/130620618/dmca.html
    • http://ngabwe.com/uploads/1/3/0/6/130620618/policy.html
    • https://notavudaja.files.wordpress.com/2020/06/88549006754.pdf
    • https://xetaduz.files.wordpress.com/2020/06/35984862535.pdf
    • https://magelibagub.files.wordpress.com/2020/06/68845930865.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 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064fc.bin
dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FC 2656 bytes
font_01_sfnt_off00006ffe.bin
aaa685aa97b3a1968ff4cc4a1123f44f436cf9e070f3c6cb41a185ad360a8182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFE 5628 bytes
font_02_sfnt_off00008247.bin
1b68eb0745f369bd9f805b89718582bd6ebaf917deeaaae5095027b3f32dc7b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 3048 bytes
font_03_sfnt_off00008e54.bin
c42118b51b061dffbc196cd4866a2cf76d9f31ae9d0a8f6c06e6ad224a677b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 2328 bytes
font_04_sfnt_off0000990b.bin
d07a9fdf75b1e191e7a1ea25e2941b9f689ff98e7e435169aef8b5fb7be41b17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x990B 2604 bytes
font_05_sfnt_off0000a421.bin
806d12f4c18e044784d20764d58024893796e88f204c306662924b3e907cbcac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA421 2108 bytes
font_06_sfnt_off0000adf5.bin
87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADF5 4336 bytes
font_07_sfnt_off0000bb96.bin
4c0498aa7233514239c2580cfc04e1833415b71254b756fc6f589bbf2a7295b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB96 10456 bytes
font_08_sfnt_off0000df66.bin
92a4ee0260ddacaf254234e7217f573f4c03f316b6a152294860014cdd3a0ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF66 18444 bytes
font_09_sfnt_off0000fce6.bin
5e63a337f3ea6aa9ddc62e302d24304e117d76fecaa74f1a89b741edfaa6b55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE6 3984 bytes
font_10_sfnt_off00010b1a.bin
38c95df71e867b4a6d62592e8ea1e6000e5d1c19e1d70473b5d4118684f42eb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1A 2608 bytes

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