Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d8306954cf41df…

MALICIOUS

PDF

48.9 KB Created: 2020-08-30 05:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74ac6a4c382cae25de13ddf2fe5ea9fb SHA-1: 35032fde3d82bf6bd1055c481a8417f32de56c0d SHA-256: 02d8306954cf41df9d5fdfd0464fec91f0921098d17a928331707f04b2002222
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm heuristic, with numerous links, many pointing to Shopify domains, suggesting an attempt to obscure the true malicious destination. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the redirector link indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/wix?keyword=quran+sharif+para+1+to+30
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0459/8916/7266/files/monthly_calendar_template_apple_pages.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/nujute.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/91995662180.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/buku_sejarah_bani_abbasiyah.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/ncert_math_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/garemodaxizebonu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/17921916694.pdf
    • https://static.usrfiles.com/ugd/b8c837_64ff54eb1c6c43e0a006ccc99c6f5e33.pdf
    • https://static.usrfiles.com/ugd/b8c837_3776a5ddc8e743ee883cc026ff267536.pdf
    • https://static.usrfiles.com/ugd/516793_8efd2e67efb946f097eee700668000bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1d2c020d34c41ef80471d436125ba5f.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_35898af8e83e4ece8caf6a0ed9b5a7bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fd757cb0e90442f996a960c16712c9d.pdf
    • https://static.usrfiles.com/ugd/cd79e3_c9dcbb484573497eb8d3a4a3a9ebd4d2.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL
    • http://sinhala.sourceforge.net/
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
    • http://www.gnu.org/licenses/gpl-2.0.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00008936.bin
5325939ffe2113b84d760c02ac276abf9650a80b487f3e831b9b8227172aec4a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8936 24804 bytes
font_00_sfnt_off00004ba7.bin
6c72f6ae269ff2f4f94da8eb8941909f5c616b22ff52e85562ea2a89dc661710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA7 5376 bytes
font_01_sfnt_off00005da3.bin
827318609a1d051be3cfeaab254ac30969c174b8cd5b5114c9f486c07e81793d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA3 2900 bytes
font_02_sfnt_off00006841.bin
36898d2ff45fa165278d6188dce9638b46dbfe79c0bad8e0db30d6ff620de3d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6841 9712 bytes

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