Malicious PDF — malware analysis report

Static analysis result for SHA-256 051cbbe1f6b84a71…

MALICIOUS

PDF

46.1 KB Created: 2020-07-27 04:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5ad77e77e258b8373203ff57b5c5363 SHA-1: f253c504f47cbb00b698682362859b9571603209 SHA-256: 051cbbe1f6b84a7172e696ef7042cadea30ef64c54ac9aa3e83b1587de4fa935
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document contains a lure to install a browser extension or update, indicated by the 'SE_BROWSER_INSTALL_LURE' heuristic. It also features a malicious redirector link to 'ttraff.com', which is flagged by 'PDF_MALICIOUS_REDIRECTOR_LINK'. The document likely serves as a phishing or malware distribution vector, aiming to trick users into compromising their systems.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.com/pify?keyword=line+chrome+extension+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdf
    • http://files.iamkaybell.com/uploads/1/3/1/1/131163782/1596186.pdf
    • http://files.londonambulanceservice-patientsforum.org/uploads/1/3/1/4/131454270/5d8a2e87f1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/73882148871.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/80745468724.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/mubuzofomumanozelop.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/nejaxebix.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/47573013128.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/28581310819.pdf
    • https://cdn.shopify.com/s/files/1/0431/9723/5363/files/sarudurajakazuku.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/kipewatupog.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/xuxuwutu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/79857012771.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/takujubelajivonebavemu.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005960.bin
63b21f97045edd2d29a06c6d0352232a7ebf859806306d8af6b95e9ab0ecabb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5960 4596 bytes
font_01_sfnt_off000068ba.bin
699a409af5455e9679ce95e5180ff5ca84b0167ce04e228ec7106e0465378370		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BA 6180 bytes
font_02_sfnt_off000078b7.bin
1f79b081fe245cf9181f2e6ad484d5de3f355e0828dbe7aa1c14a68e096e11b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B7 6068 bytes
font_03_sfnt_off00008866.bin
732bfe7c2f99eef1172aa74213b1d98e1e9faab01cce6b6770580321f7291b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8866 9464 bytes

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