Malicious PDF — malware analysis report

Static analysis result for SHA-256 528159e9f277774e…

MALICIOUS

PDF

109.1 KB Created: 2020-09-13 17:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d9522bfdcb1f0d90fdba068ea7f4d4f7 SHA-1: e6ac300d77e8b5c134d758e79635dbcea300809b SHA-256: 528159e9f277774e6f05c6aa8fcdd3d4e4c5f6456712e682072ce77667eabf9a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, 'https://ttraff.me/wix?keyword=pixel+gun+3d+hack+ios', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain this URL and references to 'Pixel gun 3d hack ios', suggesting a lure to a malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, further supporting the idea of a link farm designed to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8058

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.me/wix?keyword=pixel+gun+3d+hack+ios In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://static.usrfiles.com/ugd/0e2875_6ddaad8816a54ca0a51c2581cb93050e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/466fa0_24087e0db70341f6840fd8d34cc03204.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6f9b04_1ce8d468a3694f1fafab3f7ae9e429ef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/53cfc7_acb6e76395c34e7488c8318e87263578.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/162fe6_47f5655e40224b20b190b814e3fc780d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/21e6f2_35895f5b080c40919b4d6b5d0efc1630.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_854749b94cf34baca9ab932ae6fd90a9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3ff21_2ac9d4b1d2604867b904909709a4bb6c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_434ccc9b8f9e4b3ba382b2214af7b011.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_36d5bb7b602e4182b67b03335d90b34f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/36f25b_d63dda22cd78482fbdc8c8f6ff751dad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/chinese_language_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/zewitutadulelonujukubewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8154/6390/files/87702144290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/83327366973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/latest_android_smartphones_under_12000.pdfIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E4 7140 bytes
SHA-256: 73c5a6c482542a7dd59eb548c70821e62b6611ece5a9c4efc2875b657078a8cf
font_01_sfnt_off00010a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1C 7820 bytes
SHA-256: 92730bc2d39767d759f5389593230d3ea83fccac5235ed70835899702514aece
font_02_sfnt_off0001242e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1242E 5404 bytes
SHA-256: 2ee14b61478409f7dd432a0e78618268e8325f43a00461af122c31fa850c3c56
font_03_sfnt_off00013691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13691 2316 bytes
SHA-256: 374e1bc11049e2750aa53ff29b446c0e843747e6ee03840a29de6d159c99b266
font_04_sfnt_off00014084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14084 8436 bytes
SHA-256: 1dbc725e2d0d6b9fa54f0ee723d4cc765eef4f659cd6561fce3f4b899c6557ef
font_05_sfnt_off0001508f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1508F 9808 bytes
SHA-256: 54da02b82644c98f0036fa54626da15178d7132be0a33488dc51037d0581204a
font_06_sfnt_off0001715a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1715A 16372 bytes
SHA-256: 760b8ec5a68711157087d537e5c549a95f35d37ece669cce6120f9cede7a6498

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