Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73e2a9799803c78…

MALICIOUS

PDF

96.2 KB Created: 2020-08-29 19:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a61f9fa9159f3ce6f613c77fbb461d50 SHA-1: 1461b00fed169c91c0287229a23d643363fae794 SHA-256: e73e2a9799803c78197b92247f6f6b065d1542930f617217dd73918216cda962
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=the+hobbit+desolation+of+smaug+subti'. This indicates the document is designed to trick users into visiting a potentially harmful site. The presence of a large number of external PDF links, many pointing to 'static.usrfiles.com', suggests a link farm or SEO poisoning tactic to improve the ranking of the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

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.club/wix?keyword=the+hobbit+desolation+of+smaug+subti
    • https://static.usrfiles.com/ugd/b8c837_545d58b1651b46a18cf7f2d7318c0028.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e8c549e290426da2139fed73d8dbea.pdf
    • https://static.usrfiles.com/ugd/b8c837_0430c70f4fc94b58b4a252bb469f3863.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7bc6c056ca04b09b4f4358b3b6990b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef4ad88f48ad48e197326ad8a46f24c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_6aecdae74ae14960af658b92618a68f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f4c05d4cd9f4809ad1a8fb468ce694b.pdf
    • https://static.usrfiles.com/ugd/8de238_dab80abbacce483d877b0d944eba2b28.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/75133086934.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/hypertension_treatment_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/bawanodixiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6649/files/make_your_math_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/python_if_answer_yes_stop_program.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 15

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_016_off00013e9a.bin
ad63db25de4e7b269b2592bcd7525a98b526d2d753116db3c13cee84e8d0d93e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13E9A 18892 bytes
font_00_sfnt_off000059df.bin
b6d8f72b59c47e884b0b6746a25c5cbd96eb494928042fd8f7d2b0ad088f297a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DF 7916 bytes
font_01_sfnt_off00006e3e.bin
a849b76f9363f6e208a6b3b97826a54f7c8e554eb642b232eb64e54d4f8be3d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3E 4032 bytes
font_02_sfnt_off00007caf.bin
772b0183ababac3d9f210c6534a6351871220d7476fe1e93f9d2bc377cd82e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAF 5312 bytes
font_03_sfnt_off00008e95.bin
1620336da6018abf771a3b64a4739dbc5cc5761e5bcfd31f9568e9163b5e6178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E95 2656 bytes
font_04_sfnt_off0000999a.bin
5b275de53953c5149d67b06d3b012725784ecde30e96b9351b557e4a594a3763		 pdf-font-stream PDF embedded font (sfnt) at offset 0x999A 8048 bytes
font_05_sfnt_off0000b3ef.bin
e23308bb06bff427f4fe2d795198e016b2e9db23d45fd702446b15ef1a1323d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3EF 3048 bytes
font_06_sfnt_off0000bffb.bin
6d897259d7ab9db79b0dbb16904cd99ff486aa7f4a475590a5d3e44eab6e0eed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFB 2328 bytes
font_07_sfnt_off0000cab3.bin
d4cda5a9ecb2558448f754249352cd4d73a8f7efff03060ee9a54ebf713292d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB3 2604 bytes
font_08_sfnt_off0000d58b.bin
869700f7b438b0b0f23cfbf3a170597ae1a6b01e9ba9f60fe7298d5eefb98f81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD58B 3840 bytes
font_09_sfnt_off0000e399.bin
b3976ad28991401f3a7e0d936621f3963ed8fd81aff5bedc9e25cf6548b1959b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE399 2108 bytes
font_10_sfnt_off0000ed72.bin
87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED72 4336 bytes
font_11_sfnt_off0000fb12.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB12 6148 bytes
font_12_sfnt_off00010afc.bin
e2037e779319faa089c81dac3c8c01ba6f138dd920157e6ff1aea2d578142cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFC 16676 bytes
font_14_sfnt_off00015df6.bin
1cc80836e0a54a2c4db1185994f1ac0eab94f7f28d8d60f500043b8ef5b5dd0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15DF6 3536 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.