Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d052add8dad2008…

MALICIOUS

PDF

147.5 KB Created: 2020-08-11 00:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9ec8ef23383e03e022e6996564c0e7f SHA-1: 475911bafebea934d4785df21c5a28d71bf8d516 SHA-256: 0d052add8dad200882946e2b88b9bf178d822dc1bd0df1b1a3138d6b9ff557e2
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a tutorial guide. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious redirector indicates an attempt to lure the user to a harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.ru/pify?keyword=ansys+fluent+tutorial+guide+pdf
    • http://zuxokulo.rescueridershorserescue.com/uploads/1/3/2/6/132683014/3bee0cd58b92c.pdf
    • http://files.kazquilting.com/uploads/1/3/1/4/131409909/biliwelom_jevikitewa_nunabegeminisol_rapir.pdf
    • http://files.soulfoodcafemission.org/uploads/1/3/2/6/132682607/simedanasotubub_virurufagut_soxuwogasuwubaz_zuvowa.pdf
    • http://files.azioshsfi.org/uploads/1/3/2/6/132682929/2003446.pdf
    • http://files.kurzyhs.info/uploads/1/3/0/8/130874369/7055656.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6074/6648/files/ctet_answer_key_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/58939843880.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/23895277153.pdf
    • https://cdn.shopify.com/s/files/1/0440/3570/2949/files/29695746756.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1723/files/arrl_antenna_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3369/8209/files/80715655378.pdf
    • https://cdn.shopify.com/s/files/1/0440/1663/1973/files/xbox_one_controller_windows_7_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/1976_cessna_172_poh.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/logadepetaxuvi.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002012b.bin
c2058b2a8d71c3b11b3a4d3919a1f45679a80e9949f40b6d0ac82b5c2331d40f
pdf-font-stream PDF embedded font (sfnt) at offset 0x2012B 5300 bytes
font_01_sfnt_off00021347.bin
b120960bc3a77ce6206a7985bcd42e9909bb86acddfaed7efcd6f3483d9c9786
pdf-font-stream PDF embedded font (sfnt) at offset 0x21347 14136 bytes